题目内容
(请给出正确答案)
[单选]
有语句Strings=”hello world”;,以下操作()是不合法的。
A、int i=s.length();
B、s>>>=3;
C、String ts=s.trim();
D、String t=s+”!”;
查看答案
A、int i=s.length();
B、s>>>=3;
C、String ts=s.trim();
D、String t=s+”!”;
A、intm=s.indexOf(‘r’);
B、charc=s.charAt(0);
C、intn=s.length();
D、Stringstr=s.append(‘2’);
A、publicclassJ_Class{publicJ_Class(void){}}
B、publicclassJ_Class{}
C、publicclassJ_Class{publicJ_Class(Strings){}}
D、publicclassJ_Class{publicvoidJ_Class(){}publicJ_Class(Strings){}
A、ArithmeticException
B、NullPointerException
C、IOException
D、ClassNotFoundException
A、A. work with
B、B. work out
C、C. work at
D、D. work up
是
否