单选题Given that a static method doIt() in a class Work represents work to be done, what block of code will succeed in starting a new thread that will do the work?   CODE BLOCK a:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   }; 

题目
单选题
Given that a static method doIt() in a class Work represents work to be done, what block of code will succeed in starting a new thread that will do the work?   CODE BLOCK a:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   };   Thread t = new Thread(r);   t.start();   CODE BLOCK b:   Thread t = new Thread() {  public void start() {   Work.doIt();  }  };   t.start();   CODE BLOCK c:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   };   r.start();  CODE BLOCK d:   Thread t = new Thread(new Work());   t.start();   CODE BLOCK e:   Runnable t = new Runnable() {   public void run() {   Work.doIt();   }   };   t.run();
A

Code block a.

B

Code block B.

C

Code block c.

D

Code block d.

E

Code block e.


相似考题
参考答案和解析
正确答案: D
解析: 暂无解析
更多“单选题Given that a static method doIt() in a class Work represents work to be done, what block of code will succeed in starting a new thread that will do the work?   CODE BLOCK a:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   }; ”相关问题
  • 第1题:

    public class Threads3 implements Runnable {  public void run() {  System.out.print(”running”);  }  public static void main(String[] args) {  Thread t = new Thread(new Threads3());  t.run();  t.run();  t.start();  }  }  What is the result?() 

    • A、 Compilation fails.
    • B、 An exception is thrown at runtime.
    • C、 The code executes and prints “running”.
    • D、 The code executes and prints “runningrunning”.
    • E、 The code executes and prints “runningrunningrunning”.

    正确答案:E

  • 第2题:

    public class Threads5 {  public static void main (String[] args) {  new Thread(new Runnable() {  public void run() {  System.out.print(”bar”);  } }).start();  }  }  What is the result?() 

    • A、 Compilation fails.
    • B、 An exception is thrown at runtime.
    • C、 The code executes normally and prints “bar”.
    • D、 The code executes normally, but nothing prints.

    正确答案:C

  • 第3题:

    Which two code fragments will execute the method doStuff() in a separate thread?()

    • A、 new Thread() { public void run() { doStuff(); } }
    • B、 new Thread() { public void start() { doStuff(); } }
    • C、 new Thread() { public void start() { doStuff(); } } .run();
    • D、 new Thread() { public void run() { doStuff(); } } .start();
    • E、 new Thread(new Runnable() { public void run() { doStuff(); } } ).run();
    • F、 new Thread(new Runnable() { public void run() { doStuff(); } }).start();

    正确答案:D,F

  • 第4题:

    class Work implements Runnable {  Thread other;   Work(Thread other) { this.other = other; }  public void run() {  try { other.join(); } catch (Exception e) { }  System.out.print("after join ");  } }  class Launch {  public static void main(String [] args) {  new Thread(new Work(Thread.currentThread())).start();  System.out.print("after start ");  } }  结果为:()

    • A、after join
    • B、after start
    • C、after join after start
    • D、after start after join

    正确答案:D

  • 第5题:

    Given that a static method doIt() in a class Work represents work to be done, what block of code will succeed in starting a new thread that will do the work?   CODE BLOCK a:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   };   Thread t = new Thread(r);   t.start();   CODE BLOCK b:   Thread t = new Thread() {  public void start() {   Work.doIt();  }  };   t.start();   CODE BLOCK c:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   };   r.start();  CODE BLOCK d:   Thread t = new Thread(new Work());   t.start();   CODE BLOCK e:   Runnable t = new Runnable() {   public void run() {   Work.doIt();   }   };   t.run();  

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

    正确答案:A

  • 第6题:

    You work as an application developer at Certkiller .com. You have been given the task of developing a Windows service application that regularly monitors other Windows services on the same computer. This Windows service application must also log any abnormal file system activity. You have added the following class to the Windows service application: public class EnumerateService : ServiceBase { public static EnumerateService () { this.ServiceName = "Enumerate Service"; this.CanStop = true; } protected override void OnStart (string[] args) { // Enumerate all services and initialize the FileSystemWatcher } protected override void OnStop () { // Stop the FileSystemWatcher and perform cleanup } public static void Main () { EnumerateService service = new EnumerateService(); } } You then create the installer for the Windows service application, and install the Windows service application. You have configured the Windows service Startup type to Automatic, and rebooted the system. You then test the new Windows service application, and find that it is not working.You need to ensure that the service is working properly. What should you do?()

    • A、 Override the OnBoot method instead of the OnStart method.
    • B、 Replace the Main method code with the following code: EnumerateService service = new EnumerateService (); Service.Run ();
    • C、 Override the OnLoad method instead of the OnStart method.
    • D、 Replace the Main method code with the following code: EnumerateService service = new EnumerateService (); Run (service);

    正确答案:D

  • 第7题:

    单选题
    class Work implements Runnable {  Thread other;   Work(Thread other) { this.other = other; }  public void run() {  try { other.join(); } catch (Exception e) { }  System.out.print("after join ");  } }  class Launch {  public static void main(String [] args) {  new Thread(new Work(Thread.currentThread())).start();  System.out.print("after start ");  } }  结果为:()
    A

    after join

    B

    after start

    C

    after join after start

    D

    after start after join


    正确答案: C
    解析: 暂无解析

  • 第8题:

    单选题
    Runnable r = new Runnable() {  public void run() {  System.out.print(”Cat”);  }  };  Threadt=new Thread(r) {  public void run() {  System.out.print(”Dog”);  }  };  t.start();  What is the result?()
    A

     Cat

    B

     Dog

    C

     Compilation fails.

    D

     The code runs with no output.

    E

     An exception is thrown at runtime.


    正确答案: B
    解析: 暂无解析

  • 第9题:

    单选题
    You work as an application developer at Certkiller .com. You have been given the task of developing a Windows service application that regularly monitors other Windows services on the same computer. This Windows service application must also log any abnormal file system activity. You have added the following class to the Windows service application: public class EnumerateService : ServiceBase { public static EnumerateService () { this.ServiceName = "Enumerate Service"; this.CanStop = true; } protected override void OnStart (string[] args) { // Enumerate all services and initialize the FileSystemWatcher } protected override void OnStop () { // Stop the FileSystemWatcher and perform cleanup } public static void Main () { EnumerateService service = new EnumerateService(); } } You then create the installer for the Windows service application, and install the Windows service application. You have configured the Windows service Startup type to Automatic, and rebooted the system. You then test the new Windows service application, and find that it is not working.You need to ensure that the service is working properly. What should you do?()
    A

     Override the OnBoot method instead of the OnStart method.

    B

     Replace the Main method code with the following code: EnumerateService service = new EnumerateService (); Service.Run ();

    C

     Override the OnLoad method instead of the OnStart method.

    D

     Replace the Main method code with the following code: EnumerateService service = new EnumerateService (); Run (service);


    正确答案: A
    解析: 暂无解析

  • 第10题:

    单选题
    1. class MyThread implements Runnable {  2. public void run() {  3. System.out.print("go ");  4. }  5.  6. public static void main(String [] args) {  7. // insert code here  8. t.start(); 9. }  10. }  和如下四句:  Thread t = new MyThread(); MyThread t = new MyThread();  Thread t = new Thread(new Thread());  Thread t = new Thread(new MyThread());  分别插入到第5行,有几个可以通过编译?()
    A

    0

    B

    1

    C

    2

    D

    3


    正确答案: A
    解析: 暂无解析

  • 第11题:

    单选题
    public class Threads5 {  public static void main (String[] args) {  new Thread(new Runnable() {  public void run() {  System.out.print(”bar”);  } }).start();  }  }  What is the result?()
    A

     Compilation fails.

    B

     An exception is thrown at runtime.

    C

     The code executes normally and prints “bar”.

    D

     The code executes normally, but nothing prints.


    正确答案: A
    解析: 暂无解析

  • 第12题:

    多选题
    Which two code fragments will execute the method doStuff() in a separate thread?()
    A

    new Thread() {public void run() { doStuff(); }};

    B

    new Thread() {public void start() { doStuff(); }};

    C

    new Thread() {public void start() { doStuff(); }}.run();

    D

    new Thread() {public void run() { doStuff(); }}.start();

    E

    new Thread(new Runnable() {public void run() { doStuff(); }}).start();


    正确答案: C,A
    解析: 暂无解析

  • 第13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:A

  • 第14题:

    Runnable r = new Runnable() {  public void run() {  System.out.print(”Cat”);  }  };  Threadt=new Thread(r) {  public void run() {  System.out.print(”Dog”);  }  };  t.start();  What is the result?() 

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

    正确答案:B

  • 第15题:

    public class TestOne implements Runnable {  public static void main (String[] args) throws Exception {  Thread t = new Thread(new TestOne());  t.start();  System.out.print(”Started”);  t.join();  System.out.print(”Complete”);  }  public void run() {  for (int i= 0; i< 4; i++) {   System.out.print(i);  }  }  }  What can be a result?()

    • A、 Compilation fails.
    • B、 An exception is thrown at runtime.
    • C、 The code executes and prints “StartedComplete”.
    • D、 The code executes and prints “StartedComplete0123”.
    • E、 The code executes and prints “Started0l23Complete”.

    正确答案:E

  • 第16题:

    public class Threads4 {  public static void main (String[] args) {  new Threads4().go();  }  public void go() {  Runnable r = new Runnable() { public void run() {  System.out.print(”foo”);  }  };  Thread t = new Thread(r);  t.start();  t.start();  }  }  What is the result?() 

    • A、 Compilation fails.
    • B、 An exception is thrown at runtime.
    • C、 The code executes normally and prints „foo”.
    • D、 The code executes normally, but nothing is printed.

    正确答案:B

  • 第17题:

    Which two code fragments will execute the method doStuff() in a separate thread?()

    • A、new Thread() {public void run() { doStuff(); }};
    • B、new Thread() {public void start() { doStuff(); }};
    • C、new Thread() {public void start() { doStuff(); }}.run();
    • D、new Thread() {public void run() { doStuff(); }}.start();
    • E、new Thread(new Runnable() {public void run() { doStuff(); }}).start();

    正确答案:D,E

  • 第18题:

    单选题
    public class Threads3 implements Runnable {  public void run() {  System.out.print(”running”);  }  public static void main(String[] args) {  Thread t = new Thread(new Threads3());  t.run();  t.run();  t.start();  }  }  What is the result?()
    A

     Compilation fails.

    B

     An exception is thrown at runtime.

    C

     The code executes and prints “running”.

    D

     The code executes and prints “runningrunning”.

    E

     The code executes and prints “runningrunningrunning”.


    正确答案: D
    解析: 暂无解析

  • 第19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20题:

    单选题
    public class TestOne implements Runnable {  public static void main (String[] args) throws Exception {  Thread t = new Thread(new TestOne());  t.start();  System.out.print(”Started”);  t.join();  System.out.print(”Complete”);  }  public void run() {  for (int i= 0; i< 4; i++) {   System.out.print(i);  }  }  }  What can be a result?()
    A

     Compilation fails.

    B

     An exception is thrown at runtime.

    C

     The code executes and prints “StartedComplete”.

    D

     The code executes and prints “StartedComplete0123”.

    E

     The code executes and prints “Started0l23Complete”.


    正确答案: E
    解析: 暂无解析

  • 第21题:

    单选题
    public class Threads4 {  public static void main (String[] args) {  new Threads4().go();  }  public void go() {  Runnable r = new Runnable() { public void run() {  System.out.print(”foo”);  }  };  Thread t = new Thread(r);  t.start();  t.start();  }  }  What is the result?()
    A

     Compilation fails.

    B

     An exception is thrown at runtime.

    C

     The code executes normally and prints „foo”.

    D

     The code executes normally, but nothing is printed.


    正确答案: D
    解析: 暂无解析

  • 第22题:

    多选题
    Which two code fragments will execute the method doStuff() in a separate thread?()
    A

    new Thread() { public void run() { doStuff(); } }

    B

    new Thread() { public void start() { doStuff(); } }

    C

    new Thread() { public void start() { doStuff(); } } .run();

    D

    new Thread() { public void run() { doStuff(); } } .start();

    E

    new Thread(new Runnable() { public void run() { doStuff(); } } ).run();

    F

    new Thread(new Runnable() { public void run() { doStuff(); } }).start();


    正确答案: C,D
    解析: 暂无解析

  • 第23题:

    单选题
    What is wrong with the following code?()   class MyException extends Exception {}   public class Qb4ab {   public void foo() {  try {  bar();  } finally {  baz();   } catch (MyException e) {}  }   public void bar() throws MyException {   throw new MyException();  }   public void baz() throws RuntimeException {   throw new RuntimeException();   }   }
    A

    Since the method foo() does not catch the exception generated by the method baz(), it must      declare the RuntimeException in its throws clause.

    B

    A try block cannot be followed by both a catch and a finally block.

    C

    An empty catch block is not allowed.

    D

    A catch block cannot follow a finally block.

    E

    A finally block must always follow one or more catch blocks.


    正确答案: B
    解析: 暂无解析

  • 第24题:

    单选题
    Given that a static method doIt() in a class Work represents work to be done, what block of code will succeed in starting a new thread that will do the work?   CODE BLOCK a:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   };   Thread t = new Thread(r);   t.start();   CODE BLOCK b:   Thread t = new Thread() {  public void start() {   Work.doIt();  }  };   t.start();   CODE BLOCK c:   Runnable r = new Runnable() {   public void run() {   Work.doIt();   }   };   r.start();  CODE BLOCK d:   Thread t = new Thread(new Work());   t.start();   CODE BLOCK e:   Runnable t = new Runnable() {   public void run() {   Work.doIt();   }   };   t.run();
    A

    Code block a.

    B

    Code block B.

    C

    Code block c.

    D

    Code block d.

    E

    Code block e.


    正确答案: C
    解析: 暂无解析