单项选择题

What is the result？（）

A.Line 26 prints "a" to System.out.
B.Line 26 prints "b" to System.out.
C.An exception is thrown at runtime.
D.Compilation of class A will fail due to an error in line 6.

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单项选择题

What is the result？（）

A.true,true
B.false,true
C.true,false
D.false,false
E.Compilation fails.
F.An exception is thrown at runtime.

单项选择题

What is the output？（）

A.300-100-100-100-100
B.300-300-100-100-100
C.300-300-300-100-100
D.300-300-300-300-100

单项选择题

Which one statements is true？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.The attribute id in the ItemTest object remains unchanged.
D.The attribute id in the ItemTest object is modified to the new value.
E.A new ItemTest object is created with the preferred value in the id attribute.