If this source code is contained in a file called SmallProg.java, what command should be used to compile it using the JDK?()   public class SmallProg {   public static void main(String args[])  { System.out.println("Good luck!"); }  }  A、java SmallProgB、

题目

If this source code is contained in a file called SmallProg.java, what command should be used to compile it using the JDK?()   public class SmallProg {   public static void main(String args[])  { System.out.println("Good luck!"); }  }  

  • A、java SmallProg
  • B、avac SmallProg
  • C、javac SmallProg.java
  • D、java SmallProg main

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参考答案和解析
正确答案:C
更多“If this source code is contained in a file called SmallProg.java, what command should be used to compile it using the JDK?()   public class SmallProg {   public static void main(String args[])  { System.out.println("Good luck!"); }  }  A、java SmallProgB、a”相关问题
  • 第1题:

    public class Foo {  public void main( String[] args ) {  System.out.println( “Hello” + args[0] );  }  }   What is the result if this code is executed with the command line?()

    • A、 Hello
    • B、 Hello Foo
    • C、 Hello world
    • D、 Compilation fails.
    • E、 The code does not run.

    正确答案:E

  • 第2题:

    public class Test {  public static void main(String[] args) {  String str = NULL;  System.out.println(str);  }  }   What is the result?()  

    • A、 NULL
    • B、 Compilation fails.
    • C、 The code runs with no output.
    • D、 An exception is thrown at runtime.

    正确答案:B

  • 第3题:

    public class Test {  public static void main( String[] args) {  String foo = args[1];  String bar = args[2];  String baz = args[3];  System.out.println(“baz = “ + baz); }  }   And the command line invocation: java Test red green blue   What is the result?()  

    • A、 baz =
    • B、 baz = null
    • C、 baz = blue
    • D、 Compilation fails.
    • E、 An exception is thrown at runtime.

    正确答案:E

  • 第4题:

    public class foo {  static String s;  public static void main (String[]args) {  system.out.printIn (“s=” + s);  } }  What is the result?()  

    • A、 The code compiles and “s=” is printed.
    • B、 The code compiles and “s=null” is printed.
    • C、 The code does not compile because string s is not initialized.
    • D、 The code does not compile because string s cannot be referenced.
    • E、 The code compiles, but a NullPointerException is thrown when toString is called.

    正确答案:B

  • 第5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 Commander
    • B、 java com. sim. sjcp.Commander
    • C、 java com/sun/sjcp/Commander
    • D、 java -cp com.sun.sjcp Commander
    • E、 java -cp com/sun/sjcp Commander

    正确答案:B

  • 第6题:

    Which code fragments will succeed in printing the last argument given on the command line to the standard output, and exit gracefully with no output if no arguments are given?()   CODE FRAGMENT a:   public static void main(String args[]) {   if (args.length != 0)   System.out.println(args[args.length-1]);   }   CODE FRAGMENT b:   public static void main(String args[]) {   try { System.out.println(args[args.length]); }   catch (ArrayIndexOutOfBoundsException e) {}   }   CODE FRAGMENT c:   public static void main(String args[]) {   int ix = args.length;   String last = args[ix];   if (ix != 0) System.out.println(last);   }   CODE FRAGMENT d:   public static void main(String args[]) {   int ix = args.length-1;   if (ix > 0) System.out.println(args[ix]);   }   CODE FRAGMENT e:   public static void main(String args[]) {   try { System.out.println(args[args.length-1]);  }catch (NullPointerException e) {}   }  

    • A、Code fragment a.
    • B、Code fragment b.
    • C、Code fragment c.
    • D、Code fragment d.
    • E、Code fragment e.

    正确答案:A

  • 第7题:

    单选题
    class MyThread extends Thread {  public void run() { System.out.println(“AAA”); }  public void run(Runnable r) { System.out.println(“BBB”); }  public static void main(String[] args) {  new Thread(new MyThread()).start();  }  }   What is the result?()
    A

     AAA

    B

     BBB

    C

     Compilation fails.

    D

     The code runs with no output.


    正确答案: B
    解析: 暂无解析

  • 第8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

     true

    B

     false

    C

     Compilation fails.

    D

     An exception is thrown at runtime.


    正确答案: B
    解析: The correct answer to this question is D. The args[4] generates a runtime exception error because there are only 4 strings and the expression args[4] prints the 5th String but like it was said earlier, there are only 4 strings. 

  • 第9题:

    单选题
    Which code fragments will succeed in printing the last argument given on the command line to the standard output, and exit gracefully with no output if no arguments are given?()   CODE FRAGMENT a:   public static void main(String args[]) {   if (args.length != 0)   System.out.println(args[args.length-1]);   }   CODE FRAGMENT b:   public static void main(String args[]) {   try { System.out.println(args[args.length]); }   catch (ArrayIndexOutOfBoundsException e) {}   }   CODE FRAGMENT c:   public static void main(String args[]) {   int ix = args.length;   String last = args[ix];   if (ix != 0) System.out.println(last);   }   CODE FRAGMENT d:   public static void main(String args[]) {   int ix = args.length-1;   if (ix > 0) System.out.println(args[ix]);   }   CODE FRAGMENT e:   public static void main(String args[]) {   try { System.out.println(args[args.length-1]);  }catch (NullPointerException e) {}   }
    A

    Code fragment a.

    B

    Code fragment b.

    C

    Code fragment c.

    D

    Code fragment d.

    E

    Code fragment e.


    正确答案: C
    解析: 暂无解析

  • 第10题:

    单选题
    以下是JAVA中正确的入口方法是? ()
    A

     public static void main(String[] args){}

    B

     public static void main(String args){}

    C

     public void main(String[] args){}

    D

     public static int main(String[] args){}


    正确答案: D
    解析: 暂无解析

  • 第11题:

    单选题
    If this source code is contained in a file called SmallProg.java, what command should be used to compile it using the JDK?()   public class SmallProg {   public static void main(String args[])  { System.out.println("Good luck!"); }  }
    A

    java SmallProg

    B

    avac SmallProg

    C

    javac SmallProg.java

    D

    java SmallProg main


    正确答案: B
    解析: 暂无解析

  • 第12题:

    单选题
    public class Test {  public static void main(String[] args) {  String str = NULL;  System.out.println(str);  }  }   What is the result?()
    A

     NULL

    B

     Compilation fails.

    C

     The code runs with no output.

    D

     An exception is thrown at runtime.


    正确答案: C
    解析: NULL should be "null".

  • 第13题:

    public class Alpha{  public static void main( string[] args ){  if ( args.length == 2 ) {  if ( args.[0].equalsIgnoreCase(“-b”) )  System.out.println( new Boolean( args[1] ));  }  }  }   And the code is invoked by using the command: java Alpha –b TRUE   What is the result?()  

    • A、 true
    • B、 null
    • C、 false
    • D、 Compilation fails.
    • E、 The code runs with no output.
    • F、 An exception is thrown at runtime.

    正确答案:A

  • 第14题:

    声明Java独立应用程序main()方法时,正确表达是()。

    • A、public static void main(String[]args){…}
    • B、private static void main(String args[]){…}
    • C、public void main(String args[]){…}
    • D、public static void main(){…}

    正确答案:A

  • 第15题:

    public class foo {  public static void main (String[]args) {  String s;  system.out.printIn (“s=” + s);  }  }   What is the result?()  

    • A、 The code compiles and “s=” is printed.
    • B、 The code compiles and “s=null” is printed.
    • C、 The code does not compile because string s is not initialized.
    • D、 The code does not compile because string s cannot be referenced.
    • E、 The code compiles, but a NullPointerException is thrown when toString is called.

    正确答案:C

  • 第16题:

    Public class test (  Public static void stringReplace (String text)  (  Text = text.replace (‘j’ , ‘i’);  )  public static void bufferReplace (StringBuffer text)  (  text = text.append (“C”)  )   public static void main (String args[]}  (  String textString = new String (“java”); StringBuffer text BufferString = new StringBuffer (“java”);  stringReplace (textString);  bufferReplace (textBuffer);  System.out.printLn (textString + textBuffer);  ) )  What is the output?()


    正确答案:javajavaC

  • 第17题:

    public class Foo {  public static void main(String[] args) {  try {  return;  } finally {  System.out.println( “Finally” );  }  }  }  What is the result?()

    • A、 Finally
    • B、 Compilation fails.
    • C、 The code runs with no output.
    • D、 An exception is thrown at runtime.

    正确答案:A

  • 第18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、 true
    • B、 false
    • C、 Compilation fails.
    • D、 An exception is thrown at runtime.

    正确答案:D

  • 第19题:

    填空题
    Public class test (  Public static void stringReplace (String text)  (  Text = text.replace (‘j’ , ‘i’);  )  public static void bufferReplace (StringBuffer text)  (  text = text.append (“C”)  )   public static void main (String args[]}  (  String textString = new String (“java”);  StringBuffer text BufferString = new StringBuffer (“java”);  stringReplace (textString);  BufferReplace (textBuffer);  System.out.printLn (textString + textBuffer);  )  )   What is the output?()

    正确答案: JAVAJAVA
    解析: 暂无解析

  • 第20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.println(“baz = “ + baz); }  }   And the command line invocation: java Test red green blue   What is the result?()
    A

     baz =

    B

     baz = null

    C

     baz = blue

    D

     Compilation fails.

    E

     An exception is thrown at runtime.


    正确答案: C
    解析: A java.lang.ArrayIndexOutOfBoundsException is thrown because of line 3, should be args[0].

  • 第21题:

    单选题
    public class foo {  public static void main (String[]args) {  String s;  system.out.printIn (“s=” + s);  }  }   What is the result?()
    A

     The code compiles and “s=” is printed.

    B

     The code compiles and “s=null” is printed.

    C

     The code does not compile because string s is not initialized.

    D

     The code does not compile because string s cannot be referenced.

    E

     The code compiles, but a NullPointerException is thrown when toString is called.


    正确答案: A
    解析: 暂无解析

  • 第22题:

    单选题
    public class Foo {  public void main( String[] args ) {  System.out.println( “Hello” + args[0] );  }  }   What is the result if this code is executed with the command line?()
    A

     Hello

    B

     Hello Foo

    C

     Hello world

    D

     Compilation fails.

    E

     The code does not run.


    正确答案: E
    解析: 暂无解析

  • 第23题:

    单选题
    public class Alpha{  public static void main( string[] args ){  if ( args.length == 2 ) {  if ( args.[0].equalsIgnoreCase(“-b”) )  System.out.println( new Boolean( args[1] ));  }  }  }   And the code is invoked by using the command: java Alpha –b TRUE   What is the result?()
    A

     true

    B

     null

    C

     false

    D

     Compilation fails.

    E

     The code runs with no output.

    F

     An exception is thrown at runtime.


    正确答案: B
    解析: 暂无解析