单项选择题

Given： Which code fragment， inserted at the end of line……

Given：

Which code fragment， inserted at the end of line 12， produces the output p is 420？（）

A.p.setWeight（420）；
B.p.changePayload（420）；
C.p = new Payload（420）；
D.Payload.setWeight（420）；
E.p = Payload.setWeight（420）；

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热门试题

单项选择题Given： When line 15 is reached， how many objects are eligible for the garbage collector？（）

A.0
B.1
C.2
D.3
E.4

单项选择题Given： Which statement is true about the objects referenced by snoog， snooch， and booch immediately after line23 executes？（）

A.None of these objects are eligible for garbage collection.
B.Only the object referenced by booch 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 booch are eligible for garbage collection.

多项选择题Click the Exhibit button. 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Click the Exhibit button. Given this code from Class B： 25.A a1 = new A（）； 26.A a2 = new A（）； 27.A a3 = new A（）； 28.System.out.println（A.getInstanceCount（））； 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.