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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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
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.
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 ）；
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）；
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.
Given
11.public interface Status {
12./* insert code here */ int MY_VALUE = 10；
13.}
Which three are valid on line 12？（）
A.final
B.static
C.native
D.public
E.private
Given：
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（）；
Given：
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.
Given：
Which code， inserted at line 15， allows the class Sprite to compile？（）
A.Foo { public int bar（） { return 1； }
B.new Foo { public int bar（） { return 1； }
C.new Foo（） { public int bar（） { return 1； }
D.new class Foo { public int bar（） { return 1； }
最新试题
Given：What is the result？（）
Click the Exhibit buttonWhich two statements are true if a NullPointerException is thrown on line 3 of class C？（）
Given：What is the result？（）
Given：What is the result？（）
Click the Exhibit button.Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM？（）
A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command：java games.cards.Poker What allows the user to do this？（）
Given：What is the result？（）
Given：When the doSomething method is called， after which line does the Object created in line 5 become available for garbage collection？（）
Given:What is the result？（）
Click the Exhibit button.What is the result？（）