已知如下定义:String s = "story"; 下面哪个语句不是合法的____
题型:单项选择题
问题:
已知如下定义:String s = "story"; 下面哪个语句不是合法的______
A.s += "books";
B.s = s + 100;
C.int len = s.length;
D.String t = s + “abc”;
已知如下定义:String s = "story"; 下面哪个语句不是合法的______
A.s += "books";
B.s = s + 100;
C.int len = s.length;
D.String t = s + “abc”;