多项选择题

Given： Which two code fragments， inserted independently……

Given：

Which two code fragments， inserted independently at line 3， generate the output 4247？（）

A.String s = "123456789";s = (s-"123").replace(1,3,"24") - "89";
B.StringBuffer s = new StringBuffer("123456789");
C.sdelete（0，3）.replace（1，3，"；24"；）.delete（4，6）；
D.substring（3，6）.delete（1，3）.insert（1，&ensp；"；24"；）；

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热门试题

单项选择题Given： What is the result？（）

A.3，2，1
B.1，2，3
C.Compilation fails.
D.The code runs with no output.
E.An exception is thrown at runtime.

单项选择题Given： What is the result？（）

A.three
B.other
C.An exception is thrown at runtime.
D.Compilation fails because of an error on line 12.
E.Compilation fails because of an error on line 13.

单项选择题Click the Exhibit button. Given： ClassA a = new ClassA（）；a.methodA（）； What is the result？（）

A.Compilation fails.
B.ClassC is displayed.
C.The code runs with no output.
D.An exception is thrown at runtime.

单项选择题Given： Which exception or error will be thrown when a programmer attempts to run this code？（）

A.java.lang.StackOverflowError
B.java.lang.IllegalStateException
C.java.lang.ExceptionInInitializerError
D.java.lang.ArrayIndexOutOfBoundsException

单项选择题Given： What is the result？（）

A.B
B.The code runs with no output.
C.Compilation fails because of an error in line 12.
D.Compilation fails because of an error in line 15.
E.Compilation fails because of an error in line 18.