单项选择题
What is the result？（）
A.harrier B.shepherd C.retriever D.Compilation fails E.retriever harrier F.An exception is thrown at runtime
When the doSomething method is called， after which line...
When the doSomething method is called， after which line does the Object created in line 5 become available for garbage collection？（）
A.Line 5 B.Line 6 C.Line 7 D.Line 8 E.Line 9 F.Line 10
What is the result？（） A.nullB.zeroC.someD.Compilation f...
A.null B.zero C.some D.Compilation fails. E.An exception is thrown at runtime.
Which two statements are true？（） A.Foo.beta（） is a vali...
多项选择题
Which two statements are true？（）
A.Foo.beta（） is a valid invocation of beta（）. B.Foo.alpha（） is a valid invocation of alpha（）. C.Method beta（） can directly call method alpha（）. D.Method alpha（） can directly call method beta（）.
