String s7 = "hello";
String s8 = "world";
String s9 = "helloworld";
System.out.println(s9==s7+s8);
System.out.println(s9=="hello"+"world");
为毛第一个是FALSE。求解答
String s8 = "world";
String s9 = "helloworld";
System.out.println(s9==s7+s8);
System.out.println(s9=="hello"+"world");
为毛第一个是FALSE。求解答
System.out.println(s9==s7+s8);