摘要：父类：public class A { private int i = print("this is a common variable"); private static int j = print("this is a static common variable"); public A(){ 阅读全文

摘要：public static void main(String[] args) { Integer i=1; Integer j=1; System.out.println(i==j); System.out.println(i.equals(j)); Integer i1=128; Integer 阅读全文