Java For Android #15: Methods - Not operation

Code:

package com.example;
public class java {

    public static void main(String[] str) {

        boolean bool1 = not_operation(true);

        System.out.println("first output " + bool1);

        boolean bool2 = not_operation(false);

        System.out.println("Second output " + bool2);    }

    public static boolean not_operation(boolean in){

        boolean out = false;

        if (in == true){

            out = false;

        }

        else if (in == false){

            out = true;

        }

        return out;

    }

}

Reusing the code is a desirable trait in the programming world. Methods provide this feature as a plus. In this tutorial, I have implemented a simple program of boolean not operation. Where the output is the reverse of the input. As an argument, I have taken a boolean value and returned a boolean result from the method.