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_posts/2020-12-23-create-uuid-in-java.md

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+---
+layout: post
+title: "How To Create UUID in Java?"
+author: gaurav
+image: assets/images/2020-12-23/create-uuid-in-java.png
+categories: [ Java, Core Java, String]
+description: In this article you will see, how to create UUID in Java.
+
+---
+
+## Introduction
+
+UUID, a universally unique identifier is a 128-bit number used to identify information in computer systems.
+
+UUID is made of hex digits along with 4 hyphen ("-") symbols. The length of a UUID is 36 characters.
+
+There are 5 types of UUID but mostly version 4 i.e. Randomly Generated UUID is used.
+
+We are going to create the version 4 UUID here.
+
+### Example UUID
+
+df6fdea1-10c3-474c-ae62-e63def80de0b
+
+## How to create UUID in Java?
+
+Creating a Randomly Generated UUID (version 4) is really easy in Java.
+
+UUID Class is present in  `java.util` package. And it has the static method `randomUUID()` which returns the randomly generated UUID.
+
+The example is given below.
+
+```java
+import java.util.UUID;
+
+/**
+ * A Java program to create a Randomly Generated UUID i.e. Version 4 UUID
+ * @author Gaurav Kukade at coderolls.com
+ *
+ */
+public class CreateUUID {
+
+	public static void main(String[] args) {
+
+		// creating random uuid i.e. version 4 UUID
+		UUID uuid = UUID.randomUUID();
+
+		System.out.println("Printing the randomly generated UUID value......\n");
+
+		System.out.println("uuid: "+uuid);
+
+	}
+
+}
+
+```
+Output
+```java
+Printing the randomly generated UUID value......
+
+uuid: e3aed661-ccc2-42fd-ad69-734fee350cd2
+
+```
+
+Get the [above code as GitHub Gist](https://gist.github.com/gauravkukade/395f314c549969bd300d72c7e032dbcb).
+
+--------
+
+You can visit my [YouTube channel 'coderolls'](https://www.youtube.com/channel/UCl31HHUdQbSHOQfc9L-wo3w?view_as=subscriber?sub_confirmation=1) to find more video tutorials.
+
+If you found this article worth, support me by  [giving a cup of Coffee ☕](https://www.paypal.me/GauravKukade)
+
+#### Related Articles
+
+-   [Learn About Java String Pool And intern() Method](https://coderolls.com/java-string-pool-and-intern-method/)
+-   [How Do I Compare Strings In Java](https://coderolls.com/compare-strings-in-java/)
+-   [How To Reverse A String In Java (5 ways)](https://coderolls.com/reverse-a-string-in-java/)
+-   [Compare Two Strings Lexicographically In Java](https://coderolls.com/compare-two-strings-lexicographically-in-java/)
+-  [Difference Between StringBuffer and StringBuilder class](https://coderolls.com/difference-between-stringbuffer-and-stringbuilder/)
+
+- [8 Basic GIT Commands Every Newbie Developer Must Know](https://coderolls.com/basic-git-commands/)

_posts/2020-12-25-convert-stringbuilder-to-string-in-java.md

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+---
+layout: post
+title: "How To Convert StringBuilder To String In Java?"
+author: gaurav
+image: assets/images/2020-12-25/convert-stringbuilder-to-string-in-java.png
+categories: [ Java, Core Java, String]
+description: In this article you will see, how to convert a StringBuilder to String in Java.
+featured: false
+---
+
+## Introduction
+
+Java `StringBuilder` is non-synchronized update of the `StringBuffer` class.
+
+Sometimes there is need to convert the `StringBuilder` object to the `String`. We can do it easily by smply invoking the `toString()` method.
+
+Let see the example program below.
+
+## Java Program to convert `StringBuilder` to `String`
+
+```java
+/**
+ * A Java program to convert StringBuilder to String
+ * @author Gaurav Kukade at cderlls.com
+ *
+ */
+public class StringBuilderToString {
+
+	public static void main(String[] args) {
+		StringBuilder stringBuilder = new StringBuilder("Hello ");
+
+		stringBuilder.append("Gaurav ")
+		.append("Kukade!");
+
+		System.out.println("Printing strinBuilder as String: \n");
+		System.out.println(stringBuilder.toString());
+
+	}
+
+}
+```
+Output: 
+```java
+Printing strinBuilder as String: 
+
+Hello Gaurav Kukade!
+
+```
+Get the [above code as GitHub Gist](https://gist.github.com/gauravkukade/00bd416bcb2ca1c72dbcd600d48e2f78).
+
+---------
+
+You can visit my [YouTube channel 'coderolls'](https://www.youtube.com/channel/UCl31HHUdQbSHOQfc9L-wo3w?view_as=subscriber?sub_confirmation=1) to find more video tutorials.
+
+If you found this article worth, support me by  [giving a cup of Coffee ☕](https://www.paypal.me/GauravKukade)
+
+#### Related Articles
+
+-   [Learn About Java String Pool And intern() Method](https://coderolls.com/java-string-pool-and-intern-method/)
+-   [How Do I Compare Strings In Java](https://coderolls.com/compare-strings-in-java/)
+-   [How To Reverse A String In Java (5 ways)](https://coderolls.com/reverse-a-string-in-java/)
+-   [Compare Two Strings Lexicographically In Java](https://coderolls.com/compare-two-strings-lexicographically-in-java/)
+-  [Difference Between StringBuffer and StringBuilder class](https://coderolls.com/difference-between-stringbuffer-and-stringbuilder/)
+
+- [8 Basic GIT Commands Every Newbie Developer Must Know](https://coder