java/22_Methods at main · PeiHui369/java · GitHub

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//  method = a block of code that is executed whenever it is called upon

1.
public class Main {
    public static void main(String[] args) {
    hello();
    hello();
        }
        static void hello() {
            System.out.println("Hello");
        }
}
>>
Hello
Hello

2. Parameters
public class Main {
    public static void main(String[] args) {
    String name = "Bro";
    int age = 21;
    hello(name,age);
        }
        static void hello(String name, int age) {
            System.out.println("Hello "+ name + ", you are "+age);
        }
}
>>
Hello Bro, you are 21

3.
public class Main {
    public static void main(String[] args) {
    int x = 3;
    int y =4;
    int z = add(x,y);
    System.out.println(z);
        }
        static int add(int x, int y){
        int z = x + y;
        return z;
        }
}
oR
public class Main {
    public static void main(String[] args) {
    int x = 3;
    int y =4;;
    System.out.println(add(x,y));
        }
        static int add(int x, int y){
        return x+y;
        }
}