Integer中判断是否相等的的问题
Integer中判断是否相等的的问题实验代码：public class Test1 { public static void main(String[] args) { Integer x1 = 1; Integer x2 = 1; System.out.println(x1 == x2); Integer x3 = 10; int x4 = 10; System.out.println(x3
