Constructor vs Method in Java (Java Interview QA)

Learn the difference between constructors and methods in Java with simple explanations, syntax, and examples. Understand when and how to use each.

📌 What is a Constructor?

A constructor is a special block of code used to initialize objects.

✅ Key Characteristics:

• Has the same name as the class.
• No return type (not even void).
• Called automatically when an object is created using new.
• Can be overloaded (multiple constructors with different parameters).

🧱 Example:

public class Person {
    String name;

    // Constructor
    public Person(String name) {
        this.name = name;
    }
}

Person p = new Person("Ramesh"); // Constructor is called here

📌 What is a Method?

A method is a block of code that performs an action (like calculating, printing, processing data, etc.).

✅ Key Characteristics:

• Can have any name.
• Must declare a return type (void, int, String, etc.).
• Called manually using the object.
• Can also be overloaded.