单选题What will be the result of attempting to compile and run the following program？（）   public class Q28fd {   public static void main（String args[]） {   int counter = 0；   l1：   for （int i=10； i i） break l2；   if （i == j） {   counter++；   continue l1；   }

第1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.

第2题：

public class Foo {   public void main （String args） {   system.out.printIn（“Hello World.”）；   }   }   What is the result？ （） 

• A、 An exception is thrown.
• B、 The code does no compile.
• C、 “Hello World.” Is printed to the terminal.
• D、 The program exits without printing anything.

第3题：

第4题：

String foo = “blue”；    Booleanbar = new Boolean [1]；    if （bar[0]） {    foo = “green”；    }   What is the result？（）  

• A、 Foo has the value of “”
• B、 Foo has the value of null.
• C、 Foo has the value of “blue”
• D、 Foo has the value of “green”
• E、 An exception is thrown.
• F、 The code will not compile.

第5题：

Which of the following best describes what is meant by Linux Affinity on AIX？（）

• A、The ability to install a Linux system on an AIX system
• B、The ability to install an AIX system on a Linux system
• C、The ability to compile and run a Linux application on AIX
• D、The ability to compile and run an AIX application on Linux

第6题：

What will be the result of attempting to run the following program？（）   public class Qaa75 {   public static void main（String args[]） {   String[][][] arr = {   { {}， null }，   { { "1"， "2" }， { "1"， null， "3" } }，   {}，   { { "1"， null } }  }；   System.out.println（arr.length + arr[1][2].length）；   }   }  

• A、The program will terminate with an ArrayIndexOutOfBoundsException.
• B、The program will terminate with a NullPointerException.
• C、4 will be written to standard output.
• D、6 will be written to standard output.
• E、7 will be written to standard output.

第7题：

What will be the result of attempting to compile and run the following code？（）   public class Q6b0c {   public static void main（String args[]） {  int i = 4；  float f = 4.3；   double d = 1.8；   int c = 0；   if （i == f） c++；   if （（（int） （f + d）） == （（int） f + （int） d））  c += 2；   System.out.println（c）；   }   }  

• A、The code will fail to compile.
• B、0 will be written to the standard output.
• C、1 will be written to the standard output.
• D、2 will be written to the standard output.
• E、3 will be written to the standard output.

第8题：

public class foo {   public static void main （Stringargs） {  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.

第9题：

What will be the result of attempting to compile and run the following program？（）   public class Q28fd {   public static void main（String args[]） {   int counter = 0；   l1：   for （int i=10； i<0； i--） {   l2：  int j = 0；   while （j < 10） {   if （j > i） break l2；   if （i == j） {   counter++；   continue l1；   }   }   counter--；   }   System.out.println（counter）；  }   }   

• A、The program will fail to compile.
• B、The program will not terminate normally.
• C、The program will write 10 to the standard output.
• D、The program will write 0 to the standard output.
• E、The program will write 9 to the standard output.

第10题：

int index = 1；  String [] test = new String[3]；  String foo = test[index]；     What is the result？（）  

• A、 Foo has the value “”
• B、 Foo has the value null
• C、 An exception is thrown
• D、 The code will not compile