This document provides an overview of GUI programming basics using the AWT API in Java. It discusses the key component, container and layout manager classes used to create graphical user interfaces in Java. Component classes like Button, Label and TextField are used to add interactive elements, while container classes like Frame and Panel hold other components. Layout managers help position and organize components visually. The document also provides examples of creating simple frames and applications using these AWT classes.
The document discusses building graphical user interfaces (GUIs) in Java. It covers the Abstract Window Toolkit (AWT) and Swing frameworks, which provide components for creating GUIs. It describes common layout managers like FlowLayout, BorderLayout, and GridLayout that control how components are arranged within containers. It also explains how to add behavior to components by attaching listener objects that respond to user events like button clicks or text changes.
The document provides an overview of how to build a graphical user interface (GUI) in Java. It discusses the key classes used to create GUI components like JFrame, JPanel, and JButton. It explains how to set layout managers, add components, set frame size and visibility. It also includes sample code to create a simple calculator GUI with a border layout and grid layout. The document is an introduction to developing GUIs in Java using the Swing toolkit.
- Java AWT (Abstract Windowing Toolkit) is an API that provides components to build graphical user interfaces (GUIs) in Java. It includes classes like TextField, Label, TextArea, etc.
- AWT components are platform-dependent and heavyweight, using operating system resources. Common containers include Frame, Dialog, and Panel.
- This document provides details on various AWT components like Label, Button, Checkbox, List, and TextField. It also covers events, listeners, and methods of these components.
This document discusses Java's GUI components and how to create basic buttons and labels. It provides details on:
- Java's GUI components include labels, text fields, buttons, and containers like frames and panels
- Buttons can be created and added to frames or panels, and listeners can be assigned to detect button clicks
- Labels are used to display text, text fields allow for single-line text input, and text areas are for multi-line text
AWT (Abstract Window Toolkit) is a collection of classes and methods that allows creation and management of windows. It provides support for applets and contains support for window-based graphical user interfaces. Different window classes defined by AWT add functionality, with Component and Container being the base classes. Layout managers determine how components are arranged in frames using algorithms. Common layout managers include FlowLayout, BorderLayout, and GridLayout. Graphics methods allow for drawing shapes and text to windows.
This document discusses the evolution of graphical user interface (GUI) capabilities in the Java programming language. It describes the Abstract Window Toolkit (AWT) introduced in JDK 1.0, which provided basic cross-platform GUI functionality but had limitations. JDK 1.1 improved on AWT with an event delegation model. JDK 1.2 introduced Swing, a richer GUI library that better integrated with native operating system look and feels. Swing components are lightweight compared to heavyweight AWT components. The document also covers GUI component classes, layout managers, menus, labels and event handling in Java GUI programming.
The document discusses Swing, the graphical user interface (GUI) toolkit for Java. It introduces Swing as a replacement for the original Abstract Window Toolkit (AWT) that improved on AWT's weaknesses. Key points covered include:
- Swing was introduced in 1997 as part of the Java Foundation Classes to address AWT's limitations. It uses lightweight components instead of relying on native platform components.
- Swing supports pluggable look-and-feel and is based on the model-view-controller architecture. It includes a variety of common GUI components like tables, trees, sliders.
- Layout managers like FlowLayout, GridLayout, BorderLayout, and BoxLayout are used to position and
The AWT package provides basic graphics tools for Java applications. It contains classes like Container, Component, Button, Label, etc. that allow creating and managing GUI elements. Containers can hold and display Components. Components are user interface elements like buttons and text fields. Containers are also Components, allowing nesting. The example code creates a Frame container with a Panel child container holding a Label, TextField, and Button component.
This document provides an overview of GUI programming in Java, including basic concepts, AWT vs Swing frameworks, common control components, layout managers, and event handling. It discusses the key differences between AWT and Swing, describes common control components in both frameworks, explains different types of layout managers like flow, border, and grid layouts, and lists additional references for further reading.
This document provides an overview of Swing components for creating graphical user interfaces in Java. It discusses top-level containers like JFrame and JDialog, general purpose containers like JPanel and JScrollPane, basic controls for user input like JTextField and JButton, components for displaying information like JLabel and JTable, and various layout managers including FlowLayout, BorderLayout, GridLayout, BoxLayout, and GridBagLayout. It also covers using borders with components and implementing listeners for text fields. The document is intended to teach what is needed to create full-featured GUIs with Swing.
The document discusses various Swing components in Java including JButton, JTextField, JTextArea, JRadioButton, JCheckbox, JComboBox and provides examples of how to use them. It explains that Swing provides platform-independent GUI components and covers commonly used Swing classes and methods for creating windows and adding interactive elements like buttons and text fields. Constructors and example code are provided for different Swing components.
Java Swing provides graphical user interface (GUI) components for building desktop applications. It includes common widgets like buttons, text fields, labels and dialog boxes. JOptionPane allows building simple dialog boxes for input/output. Swing components are lightweight and platform-independent compared to the older AWT components. Common Swing components discussed include JFrame for windows, JButton for buttons, JLabel for text, JFileChooser for file selection and JCheckBox, JRadioButton for state buttons.
This document provides an overview of Java Swing components. It defines Swing as a GUI toolkit built on top of AWT that provides platform-independent and lightweight components. It describes common Swing components like JButton, JTextField, JTextArea and their usage. It also compares AWT and Swing, explaining how Swing components are more powerful and support pluggable look and feel while AWT is platform-dependent. Examples are given to demonstrate creating and using Swing components like JButton, JTextField, JTextArea etc.
This document provides information about NetBeans IDE and GUI programming. It discusses the NetBeans interface including components like the menu bar, tool bar, GUI builder palette, inspector window, and code editor window. It also covers concepts like projects, forms, and components in NetBeans. Common controls like buttons, labels, text fields, checkboxes and their properties/methods are explained. Steps for designing an application like creating a project, adding a JFrame form and components are outlined. Examples for different controls like buttons, labels, text fields, radio buttons etc are also included.
Swing was introduced in 1997 as part of Java Foundation Classes to address deficiencies in Java's original Abstract Window Toolkit (AWT) GUI subsystem. Swing provides more powerful and flexible GUI components than AWT. Swing components are lightweight, meaning they are written entirely in Java rather than relying on platform-specific peers. This allows Swing to provide a consistent look and feel across platforms and makes the GUI more efficient and flexible. Swing also supports pluggable look and feels, allowing different visual styles to be used.
Graphical User Interface (GUI) in Java uses classes from the javax.swing and java.awt packages to implement GUI programs. Swing classes provide greater compatibility across operating systems compared to AWT classes. Common Swing components include JButton, JLabel, JTextField, JTextArea, JCheckBox, JRadioButton, JComboBox, JList, JSlider and more. GUI programs require containers like JFrame and JPanel to hold components. Layout managers determine how components are arranged in containers. Common layouts include FlowLayout, BorderLayout and GridLayout. Menus are implemented using JMenuBar, JMenu and JMenuItem classes.
This document provides an introduction to graphical user interfaces (GUIs) in Java. It discusses GUI components such as buttons, checkboxes, lists, sliders, and menus. It explains how to create simple GUIs using Swing components like JFrames, JLabels, and JButtons. Event handling is demonstrated through examples using interfaces like ItemListener. Different types of buttons are presented, including toggle buttons, radio buttons, and checkboxes. Common GUI elements like text fields, lists, sliders and menus are also introduced through examples. The document provides a high-level overview of creating and working with basic GUI components in Java.
The document summarizes several Java GUI frameworks and libraries, including AWT, Java 2D, Swing, Swing Application Framework, Substance, Flamingo, Oxbow, MiGLayout, SwingLabs, and Aerith. It provides overviews of each framework/library, including their goals, examples of use, and basic technical details. It also discusses the history and future of Swing and related projects.
The document discusses various event handling classes in Java including ActionEvent, KeyEvent, MouseEvent, MouseMotionEvent, FocusEvent, WindowEvent, and ItemEvent. It provides examples of how to use each event class by implementing the appropriate listener interface and defining event handling methods. Key points covered include common event handling terms like event, event source, and event listener. It also summarizes the typical methods provided by each event class.
This document provides an overview of applets, including:
- Applets are Java programs that run within web browsers. Examples include interactive scientific visualizations and real-time satellite trackers.
- Applets have a lifecycle controlled by the browser via init(), start(), stop(), and destroy() methods. They are also subject to security restrictions since they are downloaded from the web.
- Resources like images, audio, and text files can be accessed from the home server hosting the applet. Communication between the applet and browser is also possible using the AppletContext interface.
This document discusses Java applets and provides examples. It defines an applet as a Java program that can be run in a web browser. Applets must extend the Applet class and override certain methods like init(), start(), stop(), and destroy() that are called at different stages of the applet lifecycle. There are two main types of applets - ones based on the AWT and ones based on Swing. The document also discusses graphics drawing in applets using the Graphics class and setting colors and fonts. It provides examples of a scrolling banner applet and using the status window.
Java applets allow Java programs to run in a web browser. Applets are downloaded and run similarly to web pages. When a web page containing an applet tag is loaded, the browser downloads the applet class file from the web server and executes it within the browser's context on the client host. Applets are subject to security restrictions that prevent them from accessing local files or making network connections except back to the host from which they were downloaded.
Event handling involves responding to user actions like clicking buttons or typing text. Events are generated by sources like buttons or keyboards and handled by listeners that implement specific event listener interfaces. The listener is registered with the source to receive notifications when events occur, then processes the event by implementing callback methods defined in the listener interface. Common types of events include action events, item events, and mouse events.
Swing is a Java GUI widget toolkit that improves upon the older AWT toolkit. It includes common GUI components like JFrame, JPanel, and JLabel. JFrame represents a window, JPanel is used to group and layout components, and JLabel displays text. These components have constructors and methods to create, configure, add, and listen to GUI elements. Layout managers automatically position components and should be used for most applications.
This chapter introduces the Abstract Window Toolkit (AWT) in Java. It discusses creating windows and frames using AWT classes. It covers working with graphics, colors, fonts, and layout managers. It also discusses using AWT controls like buttons, checkboxes, lists, menus and dialog boxes. The chapter describes handling events by extending AWT components and exploring controls, menus and layout managers in more detail.
This document provides an overview of the Abstract Window Toolkit (AWT) in Java. It discusses AWT classes for creating and managing windows, graphics, controls, menus, and events. Key topics include the Component and Container class hierarchies, creating Frame windows, setting window properties, working with colors and fonts, using controls like buttons and lists, layout managers, and handling events. The document also provides examples of creating a windowed application and displaying information within windows using AWT graphics methods.
The document discusses Java Abstract Window Toolkit (AWT) which provides components to build graphical user interfaces. It describes that AWT components are platform dependent and heavy weight since they are built on top of native OS components. It then discusses the AWT component hierarchy including common components like buttons, text fields and containers like frames and panels that hold components. Specific AWT container types and common methods for working with AWT components are also summarized.
Java AWT (Abstract Windowing Toolkit) is an API for developing GUI applications in Java. It contains components like buttons, text fields, labels etc. that are platform-dependent and heavyweight. The AWT hierarchy includes containers like Frame and Panel that can hold other components. Common methods like add(), setSize() and setLayout() are used to manage components. Event handling in AWT involves implementing listener interfaces, registering components with listeners, and placing event code in the same class, a separate class, or anonymously.
This document discusses the basics of GUI programming in Java using the AWT API. It explains that AWT provides classes for building graphical user interfaces and that there are three types of GUI classes: container classes, component classes, and helper classes. Container classes hold other components, component classes make up the visual elements, and helper classes provide properties like colors and fonts. Important container classes include Frame and Panel, while common components are buttons, labels, text fields, and checkboxes. The document provides details on constructing and using many of these classes.
Java provides two frameworks for building GUI applications: AWT and Swing. AWT (Abstract Window Toolkit) is the older framework and provides platform-dependent components. Swing is more advanced and its components are platform-independent. Both frameworks use containers like frames and panels to hold other components like buttons, text fields, and labels. Applets are Java programs that run in web browsers and extend the Applet class. They have a lifecycle of init(), start(), paint(), stop(), and destroy() methods. Graphics methods like drawString() are used to display graphics in applets. AWT and Swing components can both be used within applets.
This document provides information about the Advanced Java Programming course including the teaching and examination scheme, chapter details, and content about Abstract Windowing Toolkit (AWT) and Swings. The teaching scheme covers 5 chapters worth 100 marks total. The first chapter on AWT and Swings is worth 24 marks and covers designing graphical user interfaces using AWT and Swing components, arranging components using different layouts, and details on common AWT classes like Container, Panel, Frame, and controls like Buttons, Checkboxes, and Lists.
Python provides several options for developing graphical user interfaces (GUIs), with Tkinter being the most commonly used. Tkinter is a standard Python interface that allows creating GUI applications in Python easily. To create a Tkinter app, one imports Tkinter, creates the main window, adds widgets to it, and applies event triggers to the widgets. Common widgets in Tkinter include buttons, canvases, checkbuttons, entries, frames, labels, listboxes, menus, messages, and radiobuttons.
Chapter iii(building a simple user interface)Chhom Karath
This document discusses building graphical user interfaces (GUIs) in Java. It covers the two main libraries used - AWT and Swing. AWT provides basic components like buttons, labels, and text fields. Swing provides more advanced components. The document also discusses layout managers, common AWT components, creating a component tree, and installing the Window Builder tool in Eclipse to design GUIs.
The document discusses the Abstract Window Toolkit (AWT) in Java. Some key points:
- AWT allows developing graphical user interfaces (GUIs) in Java and its components are platform-dependent.
- The AWT class hierarchy includes Component, Container, Window, Panel, Frame, and Dialog classes. Containers hold other components.
- Layout managers determine how components are arranged. Common layouts include flow, grid, border, and card layouts.
The document discusses Java AWT (Abstract Window Toolkit). It describes that AWT is an API that allows developing GUI applications in Java. It provides classes like TextField, Label, TextArea etc. for building GUI components. The document then explains key AWT concepts like containers, windows, panels, events, event handling model, working with colors and fonts.
This document provides an overview of the Abstract Window Toolkit (AWT) in Java. It discusses AWT components like frames, panels, buttons, checkboxes, lists, text fields, scrollbars and layout managers like flow, border, grid and card layouts. The document also provides examples of creating AWT windows and using various AWT components and layout managers to design graphical user interfaces.
This document provides an overview of the Abstract Window Toolkit (AWT) in Java. It discusses key AWT classes like Window, Frame, Dialog, Panel, Canvas and their uses. It also covers common AWT controls like labels, text fields, buttons, checkboxes and lists. Layout managers, events and listeners in AWT are explained. The document is intended as an introduction to working with windows, graphics and GUI components using the AWT toolkit in Java.
The document discusses the tkinter module in Python, which provides tools for building graphical user interfaces (GUIs). Tkinter comes pre-installed with Python and allows creating GUI elements like labels, buttons, menus, and more. The document covers how to import tkinter, create windows, add widgets, and arrange widgets using different geometry managers. It also provides examples of creating common widgets like labels, buttons, checkboxes, and menus. Finally, it briefly introduces the turtle module for drawing shapes and graphics.
Graphical user interfaces (GUIs) present information to users visually using components like buttons, text fields, labels etc. Java provides the Abstract Window Toolkit (AWT) and Swing toolkit for building GUIs. Some key GUI components in Java include JButton for buttons, JTextField for text fields, JLabel for labels, JRadioButton for radio buttons, JCheckBox for checkboxes, JComboBox for drop-down lists, JTextArea for multi-line text, and JFrame for windows. JFrame methods like add(), setVisible(), setLocation(), setSize() are used to control frames. Dialog boxes are also used for input/output using the JOptionPane class.
The document provides an overview of the Abstract Windowing Toolkit (AWT) in Java, including:
1. AWT allows the creation of graphical user interfaces and provides containers, components, layout managers, graphics capabilities, and event handling.
2. Common containers include frames, panels, dialogs. Common components include labels, text fields, text areas, buttons, checkboxes, lists.
3. Layout managers like flow, border, grid, card and gridbag layouts are used to position components in containers.
4. Events in AWT are handled through interfaces like action listener, item listener and mouse listener. Programmers implement the appropriate listener interface.
The document discusses the Java Abstract Window Toolkit (AWT). It describes that AWT is used to create graphical user interface applications in Java and its components are platform dependent. It then lists and describes various AWT components like containers, frames, panels, labels, buttons, checkboxes, lists, text fields, text areas, canvases and scroll bars. It also discusses how to create frames using inheritance and association. Finally, it provides examples of using buttons, text fields and text areas in AWT applications.
Server controls in ASP.NET allow developers to add dynamic and interactive elements to web forms. There are two main types of server controls - HTML server controls which wrap standard HTML elements, and web controls which provide richer functionality. Controls can have properties set, methods called, and events handled from the server side code. When an event like a button click occurs, the page posts back to the server, runs event handlers, and returns the updated page output.
The document discusses validation controls in ASP.NET, which validate user input on both the client-side using JavaScript and server-side. It describes six common validation controls (RequiredFieldValidator, CompareValidator, RangeValidator, RegularExpressionValidator, CustomValidator, ValidationSummary) and how to implement validation using the Page.IsValid statement and validation groups. Validation controls make validation easy and flexible while combining client- and server-side validation.
.NET validation controls validate user input on both the client-side using JavaScript and server-side. There are six main validation controls: RequiredFieldValidator, CompareValidator, RangeValidator, RegularExpressionValidator, CustomValidator, and ValidationSummary. Validation controls make validation convenient by allowing controls to be cut and pasted between pages and providing both client-side and server-side validation. They are flexible in that any type of input can be validated, including data types, constants, other controls, and database values.
Master pages in ASP.NET allow you to create a consistent layout for all pages in an application. A master page defines the common elements like navigation, headers and footers. It contains content placeholders that content pages can fill. When a content page is requested, it merges with the associated master page to produce the output. This allows separation of design and content while ensuring a uniform appearance.
The document discusses Microsoft's .NET Framework, which includes a Common Language Runtime (CLR) that allows any supported language to run on a virtual machine. Languages compile to Microsoft Intermediate Language (MSIL) bytecode. Assemblies are the fundamental unit of deployment and security. The .NET Framework supports web services, distributed applications, and data binding through XML.
This document provides an overview of scripting languages, including both client-side and server-side languages. It discusses what scripting languages are and how they differ from other programming languages. Several popular scripting languages are described, including JavaScript, PHP, ASP.NET, and more. JavaScript is discussed in more depth as a commonly used client-side language for adding interactivity to web pages. The document also covers JavaScript syntax like variables, operators, and functions, and how JavaScript interacts with web pages using the Document Object Model (DOM).
The document discusses separating semantics from presentation in HTML using CSS. It introduces CSS and how it can be used to apply styles through external and embedded style sheets. It covers CSS syntax including selector strings and rule cascading. It also covers CSS properties related to fonts, text formatting, box model, backgrounds, normal flow layout, and positioning elements outside the normal flow.
There are three ways to write code in an ASP.NET web form: the mixed code method, inline code method, and code-behind method. The code-behind method, which is the default in Visual Studio .NET, separates the code into a separate file from the HTML content for better readability and maintainability. The code-behind file is compiled into the web page and associated using attributes in the @Page directive when the application starts up.
This document discusses ADO.Net and how it can be used to access and manipulate database data in ASP.Net applications. It explains that ADO.Net provides a standardized way to connect to databases and perform common data operations. The key components of ADO.Net - such as Connection, Command, and DataReader - are introduced. Examples are also provided showing how to execute SQL queries to retrieve and display data from a database.
This document discusses different options for managing state in ASP.NET applications, including client-side and server-side options. It covers client-side state management using view state, control state, hidden fields, cookies, and query strings. It also discusses server-side state management using application state, session state, and profile properties. It provides details on configuring and using each of these state management techniques.
The document discusses configuration files in ASP.NET applications. Web.config is the main configuration file for a website and is used to manage settings independently from code. It and other configuration files like Machine.config allow compartmentalizing applications for improved reliability. Global.asax handles application and session events and is where event handlers are defined.
This document provides information on static and dynamic web pages. It defines static web pages as pages that are delivered exactly as stored, while dynamic pages are generated by a web application and can change based on things like time, user, or user interaction. Static pages are quick and cheap to develop but offer less interactivity, while dynamic pages allow for more functionality but are slower and more expensive to develop. The document then provides details on HTML tags like headings, paragraphs, lists, and tables that can be used to structure content on web pages.
This document summarizes the key differences between static and dynamic web pages. Static web pages are pre-built pages that display the same content for all users, while dynamic pages are built in real-time based on things like user input or time. Some advantages of static pages are that they are quick and cheap to develop, but they lack personalization and interactivity. Dynamic pages allow for more functional, up-to-date websites but are more expensive to develop and host. The document also provides examples of common HTML tags used to structure pages and add formatting.
New microsoft office power point presentationteach4uin
ASP.NET AJAX is a framework that allows building AJAX-enabled applications with ASP.NET. It provides client script libraries that incorporate JavaScript and DHTML technologies and integrate them with ASP.NET 2.0. The framework includes server components like server controls and client components in a Microsoft AJAX library. It supports creating rich user interfaces with partial page updates and reduced network traffic compared to full page reloads.
The document provides an overview of the .NET framework. It describes .NET as a language-neutral software platform and runtime that allows developers to write and execute programs in multiple languages. The .NET framework includes common language runtime (CLR) that executes code, Windows forms for desktop apps, ASP.NET for web apps, and services like ADO.NET. It supports multiple languages and compiles code to intermediate language (IL) for execution in the CLR virtual machine.
The document discusses functions in mathematics and programming. In mathematics, a function defines a relationship between inputs and outputs. The domain is the set of valid inputs, and the range is the set of valid outputs. In programming, functions perform actions and return values. The argument type specifies valid input types, analogous to the mathematical domain, while the return type specifies the output type, analogous to the range. The C standard library contains common mathematical functions like abs, sqrt, and cos. Functions can be used in expressions and assignments like variables.
The document discusses enums in Java. It explains that enums allow a variable to only take on a set list of enumerated values, like days of the week or months. Enums provide type safety and avoid issues with integer-based enums. An enum is a class, and each enum value is an instance of that class. Enums can have fields, methods, and constructors, and provide compile-time type safety compared to integer-based enums.
There are two types of memory allocation: static and dynamic. Static allocation is done by the compiler and allocates memory for global and local variables that exists for the lifetime of the program or function. Dynamic allocation is done explicitly by the programmer using operators like new and delete. It allows memory to be allocated and resized as needed, like for arrays of unknown size. The new operator allocates memory and returns a pointer, and delete must be called to free the memory when it is no longer needed.
The document describes arrays and array operations like sorting and computing statistics. It defines arrays as structures that hold related data items of the same type. Arrays can be passed to functions by reference so the function can modify the original array. The document provides examples of using arrays to compute the mean, median, and mode of survey response data by sorting the array and counting frequencies. Functions are defined to calculate each statistic and sort the array using bubble sort.
This document discusses different types of variables in C programming, including their scope and longevity. It defines automatic, external, static, and register variables. Automatic variables are declared within a function and last only for the function's duration. External variables are declared outside functions and are globally accessible. Static variables retain their value between function calls. Register variables are stored in machine registers for faster access. The document provides examples and explanations of when and how to use each variable type.
Details of description part II: Describing images in practice - Tech Forum 2024BookNet Canada
This presentation explores the practical application of image description techniques. Familiar guidelines will be demonstrated in practice, and descriptions will be developed “live”! If you have learned a lot about the theory of image description techniques but want to feel more confident putting them into practice, this is the presentation for you. There will be useful, actionable information for everyone, whether you are working with authors, colleagues, alone, or leveraging AI as a collaborator.
Link to presentation recording and transcript: https://bnctechforum.ca/sessions/details-of-description-part-ii-describing-images-in-practice/
Presented by BookNet Canada on June 25, 2024, with support from the Department of Canadian Heritage.
Fluttercon 2024: Showing that you care about security - OpenSSF Scorecards fo...Chris Swan
Have you noticed the OpenSSF Scorecard badges on the official Dart and Flutter repos? It's Google's way of showing that they care about security. Practices such as pinning dependencies, branch protection, required reviews, continuous integration tests etc. are measured to provide a score and accompanying badge.
You can do the same for your projects, and this presentation will show you how, with an emphasis on the unique challenges that come up when working with Dart and Flutter.
The session will provide a walkthrough of the steps involved in securing a first repository, and then what it takes to repeat that process across an organization with multiple repos. It will also look at the ongoing maintenance involved once scorecards have been implemented, and how aspects of that maintenance can be better automated to minimize toil.
AC Atlassian Coimbatore Session Slides( 22/06/2024)apoorva2579
This is the combined Sessions of ACE Atlassian Coimbatore event happened on 22nd June 2024
The session order is as follows:
1.AI and future of help desk by Rajesh Shanmugam
2. Harnessing the power of GenAI for your business by Siddharth
3. Fallacies of GenAI by Raju Kandaswamy
How Social Media Hackers Help You to See Your Wife's Message.pdfHackersList
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7 Most Powerful Solar Storms in the History of Earth.pdfEnterprise Wired
Solar Storms (Geo Magnetic Storms) are the motion of accelerated charged particles in the solar environment with high velocities due to the coronal mass ejection (CME).
Quantum Communications Q&A with Gemini LLM. These are based on Shannon's Noisy channel Theorem and offers how the classical theory applies to the quantum world.
Are you interested in dipping your toes in the cloud native observability waters, but as an engineer you are not sure where to get started with tracing problems through your microservices and application landscapes on Kubernetes? Then this is the session for you, where we take you on your first steps in an active open-source project that offers a buffet of languages, challenges, and opportunities for getting started with telemetry data.
The project is called openTelemetry, but before diving into the specifics, we’ll start with de-mystifying key concepts and terms such as observability, telemetry, instrumentation, cardinality, percentile to lay a foundation. After understanding the nuts and bolts of observability and distributed traces, we’ll explore the openTelemetry community; its Special Interest Groups (SIGs), repositories, and how to become not only an end-user, but possibly a contributor.We will wrap up with an overview of the components in this project, such as the Collector, the OpenTelemetry protocol (OTLP), its APIs, and its SDKs.
Attendees will leave with an understanding of key observability concepts, become grounded in distributed tracing terminology, be aware of the components of openTelemetry, and know how to take their first steps to an open-source contribution!
Key Takeaways: Open source, vendor neutral instrumentation is an exciting new reality as the industry standardizes on openTelemetry for observability. OpenTelemetry is on a mission to enable effective observability by making high-quality, portable telemetry ubiquitous. The world of observability and monitoring today has a steep learning curve and in order to achieve ubiquity, the project would benefit from growing our contributor community.
Blockchain technology is transforming industries and reshaping the way we conduct business, manage data, and secure transactions. Whether you're new to blockchain or looking to deepen your knowledge, our guidebook, "Blockchain for Dummies", is your ultimate resource.
Paradigm Shifts in User Modeling: A Journey from Historical Foundations to Em...Erasmo Purificato
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In this follow-up session on knowledge and prompt engineering, we will explore structured prompting, chain of thought prompting, iterative prompting, prompt optimization, emotional language prompts, and the inclusion of user signals and industry-specific data to enhance LLM performance.
Join EIS Founder & CEO Seth Earley and special guest Nick Usborne, Copywriter, Trainer, and Speaker, as they delve into these methodologies to improve AI-driven knowledge processes for employees and customers alike.
2. Introduction
• AWT is a java API that is used to develop GUI applications in
Java.
• API is a collection of classes and interfaces that provide the
basic infrastructure or core functionalities for developing
specific type of application.
• There are three types of GUI classes:
1) Container classes
2) Component classes
3) Helper classes
3. Component Classes
• An instance of Component can be displayed on the screen.
• Component is the root class of all the user-interface classes
including container classes, and JComponent is the root class of
all the lightweight Swing components.
• Button, Label, TextField etc.
4. Container Classes
• An instance of Container can hold instances of Component.
• Container classes are GUI components that are used to contain
other GUI components.
• Window, Panel, Applet, Frame, and Dialog are the container
classes for AWT components.
5. Helper Classes
• The helper classes, such as Graphics, Color, Font, FontMetrics,
Dimension, and LayoutManager, are not subclasses of
Component.
• They are used to describe the properties of GUI components,
such as graphics context, colors, fonts, and dimension etc.
6. AWT Classes
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
Class Description
AWTEvent Encapsulates AWT events
Button Creates a push button control
Canvas A blank, semantics-free window
Checkbox Creates a check box control
CheckboxGroup Creates a group of check box controls
Color Manages colors in a portable, platform-independent fashion
Font Encapsulates a type font
Frame Creates a standard window that has a title bar, resize corners,
and a menu bar
Graphics Encapsulates the graphics context. This context is used by the
various output methods to display output in a window.
7. AWT classes
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
Class Description
TextField Creates a single-line edit control
TextArea Creates a multiline edit control
Window Creates a window with no frame, no menu bar, and no title
Scrollbar Creates a scroll bar control
MenuItem Creates a menu item
Menu Creates a pull-down menu
MenuBar Creates a menu bar
MenuShortcut Encapsulates a keyboard shortcut for a menu item
ScrollPane A container that provides horizontal and/or vertical scroll bars
for another component
8. Component Class Hierarchy of AWT
Component
Container
(Non-Container)
Window Panel
Frame Applet
Button Label Text Field Check-Box Text Area etc.
9. • Component is an abstract class that describes the basic
functionality supported by all AWT components.
• Container is a sub-class of Component that adds the
functionality of containership to a component.
• A Container component can contain another container or non-
container components.
• Window and Panel are two non-abstract sub-classes of
Container.
10. Component Cont…
• Panel represents a rectangular region that does not have a
border and title bar.
• Window is a Panel with border and title bar.
• Window can independently exist whereas panel can’t.
• Frame is a sub-class of Window .
• Button, Label, TextField, CheckBox etc. are non-container
components.
11. Component
• Component is an abstract class that encapsulates all of the
attributes of a visual component.
• All user interface elements that are displayed on the screen and
that interact with the user are subclasses of Component.
• It defines over a hundred public methods that are responsible for
managing events, such as mouse and keyboard input, positioning
and sizing the window, and repainting.
• A Component object is responsible for remembering the current
foreground and background colors and the currently selected text
font.
12. Commonly Used Methods of Component Class
• setBackground(): used to change the background color of a
component.
public void setBackground ( Color c)
Note: color is a helper class.
• setForeground(): used to change the foreground color of a
component.
public void setForeground ( Font obj)
• Font is represented by java.awt.Font.
public Font (String FontName, int Style, int Size)
e.g. : Font f = (“Times New Roman”, Font.BOLD, 20);
13. • setBounds(): used to specify size and position of component in
a container.
public void setBounds (int left, int top, int width, int height)
14. Container
• Container class is a subclass of Component.
• It has additional methods that allow other Component objects to be
nested within it.
• Other Container objects can be stored inside of a Container (since
they are themselves instances of Component).
• This makes for a multileveled containment system.
• A container is responsible for laying out (that is, positioning) any
components that it contains. It does this through the use of various
layout managers.
15. Commonly used methods of Container Class
• add(): used to add components to a container.
public void add (Component c)
• setSize(): used to specify the size of a container.
public void setSize(int width, int height)
• setLayout(): used to specify the layout manager for a container.
public void setLayout (LayoutManager mgr)
• setVisible(boolean visibility): used to set the visibility of
container.
public void setVisible (boolean visibility)
16. Panel
• Panel is a window that does not contain a title bar, menu bar, or
border.
• The screen output of an applet is drawn on the surface of a Panel
object. But it is not visible when applet is run inside a browser.
• When we run an applet using an applet viewer, the applet viewer
provides the title and border.
• Other components can be added to a Panel object by its add( )
method (inherited from Container).
• We can position and resize the components of a panel manually
using the setLocation( ), setSize( ), setPreferredSize( ), or
setBounds( ) methods defined by Component.
17. Window
• Window class creates a top-level window.
• A top-level window is not contained within any other object; it
sits directly on the desktop.
• Generally, we won’t create Window objects directly. Instead, we
use a subclass of Window called Frame.
18. Frame
• It is a subclass of Window and has a title bar, menu bar, borders,
and resizing corners.
• Frame encapsulates what is commonly thought of as a
“window.”
19. Frame
Constructor:
public Frame ()
public Frame (String Title)
Methods:
public String getTitle ()
public void setTitle (String Title)
public void setVisibile(boolean Visibility)
20. Label
• Used to describe other components or to display information on
a container.
Constructors:
public Label()
public Label (String s)
Methods:
• public String getText(): used to display the text on a Label.
• public void setText(): used to change the text.
21. Button
• Buttons are used to initiate action.
Constructor:
public Button ()
public Button (String Name)
Methods:
public String getLabel()
public void setLabel(String Name)
22. TextField
• Used to receive input and display the output/result.
Constructor:
public TextField ()
public TextField (String Text)
public TextField (int No_of Chars)
Methods:
public String getText ()
public void setText (String Text)
public void setEchoChar ( char x)
public void setEditable (boolean editability)
public boolean isEditable()
23. TextArea
• Used to display multiple lines of output/result.
Constructor:
public TextArea()
public TextArea (String Text)
public TextArea (int numLines, int numChars)
public TextArea (String str, int numLines, int numChars, int sBars)
sBars Constants: (SCROLLBARS_NONE, SCROLLBARS_BOTH,
SCROLLBARS_HORIZONTAL_ONLY, SCROLLBARS_VERTICAL_ONLY)
Methods:
Supports all the methods of TextArea.
void append(String str)
void insert(String str, int index)
void replaceRange(String str, int startIndex, int endIndex)
24. Checkbox and RadioButtons
• Checkbox and CheckboxGroup classes are used to create
RadioButtons.
public Checkbox (String Text)
public Checkbox (String Text, Boolean State)
public Checkbox (String Text, Boolean State,
CheckboxGroup cbg )
public Checkbox (String Text, CheckboxGroup cbg, Boolean
State, )
26. CheckboxGroup
• Used to create a set of mutually exclusive check boxes in which
one and only one check box in the group can be checked at a
time.
Constructor:
public CheckboxGroup()
Methods:
Checkbox getSelectedCheckbox( )
void setSelectedCheckbox(Checkbox which)
27. Menu Bars and Menus
• Menu is implemented in AWT by the following classes:
MenuBar, Menu, and MenuItem.
• A menu bar displays a list of top-level menu choices. Each choice is
associated with a drop-down menu.
• A menu bar contains one or more Menu objects. Each Menu object contains
a list of MenuItem objects.
• Each MenuItem object represents something that can be selected by the user.
• Since Menu is a subclass of MenuItem, a hierarchy of nested submenus can
be created.
• Checkable menu items are menu options of type CheckboxMenuItem and
will have a check mark next to them when they are selected.
28. Creating Menus
• To create a menu bar, first create an instance of MenuBar. This class
only defines the default constructor.
• Next, create instances of Menu that will define the selections
displayed on the bar. Following are the constructors for Menu:
Menu( ) throws HeadlessException
Menu(String optionName) throws HeadlessException
• Individual menu items are of type MenuItem. It defines these
constructors:
MenuItem( ) throws HeadlessException
MenuItem(String itemName) throws HeadlessException
MenuItem(String itemName, MenuShortcut keyAccel) throws
HeadlessException
29. • We can disable or enable a menu item by using the setEnabled( )
method.
void setEnabled (boolean enabledFlag)
• If the argument enabledFlag is true, the menu item is enabled. If false,
the menu item is disabled.
• We can determine an item’s status by calling isEnabled( ).
boolean isEnabled( )
• isEnabled( ) returns true if the menu item on which it is called is
enabled. Otherwise, it returns false.
• We can change the name of a menu item by calling setLabel( ). We
can retrieve the current name by using getLabel( ).
void setLabel(String newName)
String getLabel( )
30. CheckboxMenuItem
• We can create a checkable menu item by using a subclass of
MenuItem called CheckboxMenuItem.
CheckboxMenuItem( ) throws HeadlessException
CheckboxMenuItem(String itemName) throws HeadlessException
CheckboxMenuItem(String itemName, boolean on) throws
HeadlessException
• We can obtain the status of a checkable item by calling getState( ).
You can set it to a known state by using setState( ).
boolean getState( )
void setState(boolean checked)
Note: HeadlessException is Thrown when code that is dependent on a
keyboard, display, or mouse is called in an environment that does not
support a keyboard, display, or mouse.
31. Choice
• The Choice class presents a pop-up menu of choices.
• The current choice is displayed as the title of the menu.
Choice c = new Choice(); // Only default constructor available
c.add(“B. Tech.”); c.add(“BCA”); c.add(“B. Arch.”);
Methods:
String getItem(int index)
int getItemCount()
String getSelectedItem()
int getSelectedIndex()
32. List
• The List class provides a compact, multiple-choice, scrolling
selection list.
Constructors:
List( )
List(int numRows)
List(int numRows, boolean multipleSelect)
Methods:
void add(String name)
void add(String name, int index)
String getSelectedItem() String[] getSelectedItems()
int getSelectedIndex() int[] getSelectedIndexes()
33. Layout Manager classes
LayoutManager class Description
BorderLayout The border layout manager. Border layouts use five
components: North, South, East, West, and Center
CardLayout The card layout manager. Card layouts emulate index
cards. Only the one on top is showing.
GridLayout The grid layout manager. Grid layout displays
components in a two-dimensional grid.
FlowLayout The flow layout manager. Flow layout positions
components left to right, top to bottom.
34. FlowLayout
• Arranges the components in left to right, top to bottom fashion.
• It is the default layout manager for Panel.
public FlowLayout ()
public FlowLayout (int alignment)
public FlowLayout (int alignment, int H_Gap, int V_Gap)
• Alignments are specified as:
FlowLayout.LEFT
FlowLayout.RIGHT
FlowLayout.CENTER
• By default 5 pixels is used as horizontal and vertical gap between
components.
FlowLayout fl = new FlowLayout (FlowLayout.CENTER, 30, 20);
frm.setLayout(fl);
35. GridLayout
• It divides a container into a grid of specified rows and columns.
Each to display one component.
• Size of component is changed according to the size of the cell.
public GridLayout (int row, int column)
public GridLayout (int row, int column, int H_Gap, int V_Gap)
GridLayout gl = new GridLayout (3, 4);
frm.setLayout (gl);
GridLayout gl1 = new GridLayout (3, 4, 20, 30);
frm.setLayout (gl2);
36. BorderLayout
• It divides the container into 5 regions ( NORTH, SOUTH,
EAST, WEST and CENTER).
• It is the default layout manager for Window.
public BorderLayout()
• To add a component at a specific region, following method is
used:
public void add ( Component c, int Region)
Example:
Button btn = new Button(“OK”);
frm.add( btn, BorderLayout.EAST);
37. CardLayout
• It is used to arrange containers in the form of deck of cards.
Methods:
first() / last()/ next()/ previous(): is used to make the first/ last/
next/ previous card visible.
show(): is used to make a specified card visible.
public void show ( Container deck, String CardName)
• To give a name to the container while it is added to the deck:
public void add ( Container card, String CardName)
38. Steps to Create a Frame-based Interface
1) Create a Frame object.
2) Create Component Objects.
3) Add the Component objects to Frame.
4) Set the size of the Frame and make it visible.
39. My First Application
import java.awt.*;
class MyFirstApp
{
static TextField t1,t2,t3; static Button b1;
public static void main(String arr[])
{
Frame f = new Frame ("My Calculator");
Label l1 = new Label (“1st Number"); Label l2 = new Label (“2nd Number");
Label l3 = new Label ("Result");
t1 = new TextField(20); t2 = new TextField(20);
t3 = new TextField(20); t3.setEditable(false);
b1 = new Button("Add");
f.setLayout(new FlowLayout());
f.add(l1); f.add(t1); f.add(l2); f.add(t2); f.add(l3); f.add(t3); f.add(b1);
f.setSize(200,250); f.setVisible(true);
}
}