一路向北

摘要： 1 public static void main(String[] args) 2 { 3 String s1 = "123"; 4 String s2 = new String("123"); 5 sop(s1==s2); 6 7 Integer i1 = 127; 8 Integer i2 = 127; 9 sop(i1==i2);10 11 Integer i3 = 128;12 Integer i4 = 1... 阅读全文