how to create a function in java

1package com.company;
2
3public class Main {
4    static void one(){ // youCanPutWhatEverNameYouLikeInThePlaceOf"One"
5        System.out.println("HELLO");
6    }
7    public static void main(String[] args) {
8        one(); //theTerminalShouldSay"HELLO"
9    }
10}
11

1public class Main
2{
3    static void function(){
4        System.out.println("I am a function!");
5    }
6	public static void main(String[] args) {
7		function();
8	}
9}

1//declare a function like this:
2void function(int parameter1)
3{
4	//function body
5}
6//call the function like this:
7function(1);

1public class MyClass {
2  static int myMethod(int x) {
3    return 5 + x;
4  }
5
6  public static void main(String[] args) {
7    System.out.println(myMethod(3));
8  }
9}
10// Returns 8

1  static void myMethod() {
2    //LINES OF CODE
3  }

1public class main {
2  public static void function {
3    // Write your code here
4  }
5}