下列代码执行时,产生的异常是()。 String s = null; s.concat(“abc”);
A.EOFException
B.NullPointerException
C.IOException
D.ArithmeticException
A.EOFException
B.NullPointerException
C.IOException
D.ArithmeticException
String s=null;
s.concat("abc");
A. ArithmeticException
B. NullPointerException
C. IOException
D. ClassNotFoundExceptio
A、This is a test file This is a test file Please print this file
B、This is a test filePlease print this file This is a test file Please print this file
C、['This is a test filePlease print this file']
D、This is a test filePlease print this file
A、World and Hello
B、World and Cello
C、World and CelloChanged and Hello
D、Changed and Cello
A、C: [[7 6] [5 2]] D: [[4 0] [2 2]] E: [[7 6] [5 2]]
B、C: [[7 6] [5 2]] D: [[4 0] [2 2]] E: [[4 0] [2 2]]
C、C: [[4 0] [2 2]] D: [[7 6] [5 2]] E: [[4 0] [2 2]]
D、C: [[4 0] [2 2]] D: [[7 6] [5 2]] E: [[7 6] [5 2]]
A. http://www.abC.com/default.asp
B. www.exambasE.com/email/default.asp
C. //www.teach.com/shopbag/default.asp
D. /www.exam.com/map.rar
A、S.length( );
B、S.charAt(3);
C、S.append(“DE”);
D、S = "XY";
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!