单项选择题
What is the result？（）
A.Canada B.null Canada C.Canada null D.Canada Canada E.Compilation fails due to an error on line 26. F.Compilation fails due to an error on line 29.
Which is true？（） A.if line 10 is removed， the compilati...
Which is true？（）
A.if line 10 is removed， the compilation succeeds. B.if line 11 is removed， the compilation succeeds. C.if line 12 is removed， the compilation succeeds. D.if line 13 is removed， the compilation succeeds. E.More than one line must be removed for compilation to succeed.
What is the result？（） A.0， 0， 0B.150， 60， 0C.Compilatio...
A.0， 0， 0 B.150， 60， 0 C.Compilation fails. D.150， 150， 150 E.An exception is thrown at runtime.
What can directly access and change the value of the va...
What can directly access and change the value of the variable name？（）
A.any class B.only the Target class C.any class in the test package D.any class that extends Target
