总结:
==的意义在于比较的是整型
package com.aa; // public class Bd { public static void main(String[] args) { Integer i1 = 124; Integer i2 = 124; Integer i3 = 125; Integer i4 = 125; System.out.println(i1 == i2); System.out.println(i1.equals(i2)); System.out.println(i3 == i4); } } true true true