2011年JAVA认证模拟题（25）
Q73 Which of the following are valid double literals?A 1D
B eE-5D
C e2d
D 1ed
Q74 How can you force an object to be garbage collected?
A Invoke its finalized() method
B Remove all references to the object.
C Use all memory that is available to the program.
D You cannot force an object to be garbage collected.
Q75 Which of the following are true?
A TextComponent extends TextArea
B TextArea extend TextField
C TextField extends TextComponent
D TextComponent extends TextField
E TextArea extends TextComponent.
Q073 AB
Q074 D
Q075 CE
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