Which&ensp;code，&ensp;inserted&ensp;at...

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（）；

点击查看答案

您可能感兴趣的试卷

你可能感兴趣的试题

1.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.

点击查看答案

2.单项选择题 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；}}

点击查看答案

3.多项选择题 Given：
package com.sun.scjp；
public class Geodetics {
public static final double DIAMETER = 12756.32； //kilometers
}
Which two correctly access the DIAMETER member of the Geodetics class？（）

A.A
B.B
C.C
D.D

点击查看答案

4.单项选择题 What is the result？（）

A.12，4
B.The code runs with no output.
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 21.
E.Compilation fails because of an error in line 22.
F.Compilation fails because of an error in line 31.

点击查看答案

5.单项选择题 When line 14 is reached， how many objects are eligible for the garbage collector？（）

A.0
B.1
C.2
D.3
E.4
F.6

点击查看答案

6.单项选择题 Which code should be inserted at line 1 of Demo.java to compile and run Demo toprint "pizzapizza"？（）

A.import utils.*；
B.static import utils.*；
C.import utils.Repetition.*；
D.static import utils.Repetition.*；
E.import utils.Repetition.twice（）；
F.import static utils.Repetition.twice；
G.static import utils.Repetition.twice；

点击查看答案

7.单项选择题 What is the result？（）

A.test
B.null
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 1.
E.Compilation fails because of an error in line 4.
F.Compilation fails because of an error in line 5.

点击查看答案

8.单项选择题 Which code， inserted at line 14， allows the Sprite class to compile？（）

A.Direction d = NORTH；
B.Nav.Direction d = NORTH；
C.Direction d = Direction.NORTH；
D.Nav.Direction d = Nav.Direction.NORTH；

点击查看答案

9.单项选择题 Given a correctly compiled class whose source code is：

Assume that the class file is located in /foo/com/sun/sjcp/， the current directory is /foo/， and that the classpath contains "." （current directory）.
Which command line correctly runs Commander？（）

A.java Commander
B.java com.sun.sjcp.Commander
C.java com/sun/sjcp/Commander
D.java -cp com.sun.sjcp Commander
E.java -cp com/sun/sjcp Commander

点击查看答案

10.单项选择题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？（）

A.put Poker.jar in directory /stuff/java，and set the CLASSPATH to include /stuff/java
B.put Poker.jar in directory /stuff/java，and set the CLASSPATH to include /stuff/java/*.jar
C.Put Poker.jar in directory /stuff/java，and set the CLASSPATH to include /stuff/java/Poker.jar
D.put Poker.jar in directory /stuff/java/games/cards，and set the CLASSPATH to include /stuff/java
E.put Poker.jar in directory /stuff/java/games/cards，and set the CLASSPATH to include /stuff/java/*.jar
F.put Poker.jar in directory /stuff/java/games/cards，and set the CLASSPATH to include /stuff/java/Poker.jar

点击查看答案