摘要: String s1 = "a"; String s2 = "b"; String s3 = "ab"; String s4 = "a"+"b"; String s5 = s1 + s2; System.out.println(s3==s4); System.out.println(s4==s5); 阅读全文
posted @ 2021-03-01 20:09 HTwo2O 阅读(129) 评论(0) 推荐(0) 编辑