Java learning 2 (learning calculation method)

Purpose of the article

Since I decided to use Java in my business,
to output basic Java usage and organize my knowledge.

public class MyApp{
  public static void main(String[] args){
   int i;
   i = 10 / 3;
   i = 10 % 3;
   int x = 5;
$ javac
$ java MyApp

public class MyApp{
  public static void main(String[] args){
    int x = 5;
    //x = x + 12;
    x += 12;
    String s;
    s = "hello" + "world!";
$ javac
$ java MyApp

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