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单选题
Given the command line java Pass2 and： public class Pass2 { public void main（String [] args） { int x=6； Pass2 p = new Pass2（）； p.doStuff（x）； System.out.print（” main x = “+ x）； } void doStuff（int x） { System.out.print（” doStuffx = “+ x++）； } } What is the result？（）
A
Compilation fails.
B
An exception is thrown at runtime.
C
doStuffx = 6 main x = 6
D
doStuffx = 6 main x = 7
E
doStuffx = 7 main x = 6
F
doStuffx = 7 main x = 7
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更多 “单选题Given the command line java Pass2 and： public class Pass2 { public void main（String [] args） { int x=6； Pass2 p = new Pass2（）； p.doStuff（x）； System.out.print（” main x = “+ x）； } void doStuff（int x） { System.out.print（” doStuffx = “+ x++）； } } What is the result？（）A Compilation fails.B An exception is thrown at runtime.C doStuffx = 6 main x = 6D doStuffx = 6 main x = 7E doStuffx = 7 main x = 6F doStuffx = 7 main x = 7” 相关考题
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考题
Given the command line java Pass2 and： public class Pass2 { public void main（String [] args） { int x=6； Pass2 p = new Pass2（）； p.doStuff（x）； System.out.print（” main x = “+ x）； } void doStuff（int x） { System.out.print（” doStuffx = “+ x++）； } } What is the result？（） A、 Compilation fails.B、 An exception is thrown at runtime.C、 doStuffx = 6 main x = 6D、 doStuffx = 6 main x = 7E、 doStuffx = 7 main x = 6F、 doStuffx = 7 main x = 7
考题
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考题
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考题
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考题
单选题Given the command line java Pass2 and： What is the result？ （）A
doStuff x = 6 main x = 6B
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考题
单选题public class Test { public static void main （Stringargs） { String foo = args[1]； String bar = args； String baz = args； System.out.printIn（“baz = ” + baz）； } } And the output： Baz = 2 Which command line invocation will produce the output？（）A
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考题
单选题11. public class Counter { 12. public static void main（String[] args） { 13. int numArgs = /* insert code here */； 14. } 15. } and the command line： java Counter one fred 42 Which code， inserted at line 13， captures the number of arguments passed into the program？（）A
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考题
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Compilation fails.B
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doStuffx=7 mainx =6F
doStuffx=7 mainx =7
考题
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填空题Given the following code, write a line of code that, when inserted at the indicated location, will make the overriding method in Extension invoke the overridden method in class Base on the current object. class Base { public void print（ ） { System.out.println("base"); } } class Extention extends Base { public void print（ ） { System.out.println("extension"); // insert line of implementation here } } public class Q294d { public static void main(String args[]) { Extention ext = new Extention（ ）; ext.print（ ）; } } Fill in a single line of implementation.（）
考题
单选题11.public class Counter{ 12.public static void main（String[]args）{ 13.int numArgs=/*insert code here*/； 14.} 15.} and the command line：java Counter one fred 42 Which code，inserted at line 13，captures the number of arguments passed into the program？（）A
args.countB
args.lengthC
args.count（）D
args.length（）E
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考题
单选题Given the following directory structure： bigProject |--source ||--Utils.java| |--classes |-- And the following command line invocation： javac -d classes source/Utils.java Assume the current directory is bigProject，what is the result？（）A
If the compile is successful， Utils.class is added to the source directory.B
The compiler returns an invalid flag error.C
If the compile is successful， Utils.class is added to the classes directory.D
If the compile is successful， Utils.class is added to the bigProject directory.
考题
单选题Given the following code： 1） class Parent { 2） private String name； 3） public Parent（）{} 4） } 5） public class Child extends Parent { 6） private String department； 7） public Child（） {} 8） public String getValue（）{ return name； } 9） public static void main（String arg[]） { 10） Parent p = new Parent（）； 11） } 12） } Which line will cause error？（）A
line 3B
line 6C
line 7D
line 8E
line 10
考题
单选题Given a correctly compiled class whose source code is： package com.sun.sjcp； public class Commander { public static void main（String[] args） { // more code here } } 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 CommanderB
java com. sim. sjcp.CommanderC
java com/sun/sjcp/CommanderD
java -cp com.sun.sjcp CommanderE
java -cp com/sun/sjcp Commander
考题
单选题public class Test { public static void main（String [] args） { System.out.println（args.length 4 args[4].equals（“-d”））； } } If the program is invoked using the command line： java Test One Two Three –d What is the result？（）A
trueB
falseC
Compilation fails.D
An exception is thrown at runtime.
考题
单选题Given a class Repetition： 1.package utils； 2. 3.public class Repetition{ 4.public static String twice（Strings）{returns+s；} 5.} and given another class Demo： 1.//insert code here2. 3.public class Demo{ 4.public static void main（String[]args）{ 5.System.out.println（twice（"pizza"））； 6.} 7.} Which code should be inserted at line 1 of Demo.java to compile and run Demo to print“pizzapizza”？（）A
import utils.*；B
static import utils.*；C
importutils.Repetition.*；D
static importutils.Repetition.*；E
import utils.Repetition.twice（）；F
import static utils.Repetition.twice；G
static import utils.Repetition.twice；
考题
单选题public class Test { public static void main （String[]args） { String foo = args[1]； String bar = args[2]； String baz = args[3]； System.out.printIn（“baz = ” + baz）； } } And the output： Baz = 2 Which command line invocation will produce the output？（）A
Java Test 2222B
Java Test 1 2 3 4C
Java Test 4 2 4 2D
Java Test 4 3 2 1
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