How do you define a method in Java?

2 years ago
Olivia Parker
2 minutes

In Java, the definition of a method includes the following components:

  1. Access Modifiers: Methods can use access modifiers to control whether other classes can access that method. Common access modifiers include public, private, and protected.
  2. Return type: A method can have a return type, which specifies the type of value that the method returns. If the method does not return any value, the keyword void can be used.
  3. Method name: The name of the method, used to reference the method when calling it.
  4. List of parameters: A method can have zero or multiple parameters to receive values passed by the caller. Each parameter has a type and a name.
  5. Method body: The method body contains the specific implementation of the method, which is the block of code that the method will execute.

Here is a simple example demonstrating the definition of a method with a return value and parameters:

public class Example {
    public static void main(String[] args) {
        int result = sum(10, 20);
        System.out.println("Sum: " + result);
    }

    public static int sum(int a, int b) {
        return a + b;
    }
}

In the example above, a method named sum is defined, which takes two integer parameters a and b, and returns their sum. The sum method is called in the main method and the result is printed out.

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