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Java Methods

Methods in Java are blocks of code that perform a specific task. They are used to break down complex problems into smaller, manageable pieces. Methods help in code reusability and organization, making programs easier to read and maintain.

Key Topics

1. Method Declaration

A method is declared within a class and has a signature that includes the access modifier, return type, method name, and parameters (if any).

public class MyClass {
    public void myMethod() {
        // Code to execute
    }
}

2. Calling Methods

Methods are called by using the method name followed by parentheses. If the method is not static, you need to create an object of the class to call it.

MyClass obj = new MyClass();
obj.myMethod();

3. Method Overloading

Method overloading allows multiple methods in the same class to have the same name but different parameters. It's a way to achieve polymorphism in Java.

4. Method Parameters

Methods can accept parameters to receive input data. Parameters are specified within the parentheses in the method declaration.

public void myMethod(String name) {
    System.out.println("Hello, " + name);
}

Key Takeaways

  • Methods encapsulate reusable code blocks.
  • They improve code organization and readability.
  • Understand how to declare and call methods with or without parameters.
  • Method overloading allows for flexible method definitions.
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