单项选择题

What is the result？（）……

What is the result？（）

A.a，b，c
B.1，2，3
C.a1b2c3
D.a1 b2 c3
E.Compilation fails.
F.The code runs with no output.
G.An exception is thrown at runtime.

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单项选择题What is the result？（）

A.Compilation fails.
B.After line 15， the value of age is 5.
C.After line 15， the value of age is 3.
D.An exception is thrown at runtime.

多项选择题Which two statements are true about The result if the default locale is Locale.US？（）

A.The value of b is 2.
B.The value of a is 3.14.
C.The value of b is 2.00.
D.The value of a is 3.141.
E.The value of a is 3.1415.
F.The value of a is 3.1416.
G.The value of b is 2.0000.

单项选择题What is the result when method testIfA is invoked？（）

A.True
B.Not true
C.An exception is thrown at runtime.
D.Compilation fails because of an error at line 12.
E.Compilation fails because of an error at line 19.

单项选择题Which regular expression， inserted at line 12， correctly splits test into Test A ， Test B ， and Test C ？（）

A.String regex = ""；
B.String regex = " "；
C.String regex = ".*"；
D.String regex = "\\s"；
E.String regex = "\\.\\s*"；
F.String regex = "\\w[\.] +"；

单项选择题What is the result？（）

A.7
B.49
C.343
D.Compilation fails.
E.An exception is thrown at runtime.