单项选择题

Which statement is true about the objects referenced by snoog， snooch， and booch immediately after line 23 executes？（）

A.None of these objects are eligible for garbage collection.
B.Only the object referenced by booth is eligible for garbage collection.
C.Only the object referenced by snoog is eligible for garbage collection.
D.Only the object referenced by snooch is eligible for garbage collection.
E.The objects referenced by snooch and booth are eligible for garbage collection.

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热门试题

多项选择题Which three code fragments， added individually at line 29， produce the output 100？（）

A.n = 100；
B.i.setX（100）；
C.o.getY（）.setX（100）；
D.i = new Inner（）； i.setX（100）；
E.o.setY（i）； i = new Inner（）； i.setX（100）；
F.i = new Inner（）； i.setX（100）； o.setY（i）；

单项选择题Given classes defined in two different files： What is required at line 5 in class SomeApp to use the process method of BitUtils？（）

A.process（bytes）；
B.BitUtils.process（bytes）；
C.util.BitUtils.process（bytes）；
D.SomeApp cannot use methods in BitUtils.
E.import util.BitUtils.*； process（bytes）；

单项选择题What is the result？（）

A.Compilation of class A fails.
B.Line 28 prints the value 3 to System.out.
C.Line 28 prints the value 1 to System.out.
D.A runtime error occurs when line 25 executes.
E.Compilation fails because of an error on line 28.

单项选择题Which code， inserted at line 15， creates an instance of the Point class defined in Line？（）

A.Point p = new Point（）；
B.Line.Point p = new Line.Point（）；
C.The Point class cannot be instatiated at line 15.
D.Line l = new Line（）； l.Point p = new l.Point（）；

单项选择题What is the result？（）

A.Mr. John Doe
B.An exception is thrown at runtime.
C.Compilation fails because of an error in line 12.
D.Compilation fails because of an error in line 15.
E.Compilation fails because of an error in line 20.