A small test demo about the ++ operator

public class Test1
{
public static void main(String[] args)
{
int x = 2;
int y = x++;
System.out.println(x++ + 1);
System.out.println(x++);
System.out.println(y + 1);
System.out.println(x);
System.out.println(y);
}

知识点:知识点:            1. ++ 运算符放在变量的前面时，先对变量自身进行自增，再进行运算；                                放在变量的后面时，则是先进行运算，然后才对变量自身进行自增。运行结果：                  4                  4                  3                  5                  2