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？（）ACompilation fails.BAn exception is thrown at runtime.CThe code ex

第1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.

第2题：

class TestA {  public void start（） { System.out.println（”TestA”）； }  }  public class TestB extends TestA {  public void start（） { System.out.println（”TestB”）； } public static void main（String[] args） {  （（TestA）new TestB（））.start（）；  }  }  What is the result？（） 

• A、 TestA
• B、 TestB
• C、 Compilation fails.
• D、 An exception is thrown at runtime.

第3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”.

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

第5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”.

第6题：

public class Foo implements Runnable （  public void run （Thread t） {  system.out.printIn（“Running.”）；  }  public static void main （String[] args）  {  new thread （new Foo（））.start（）；  } ）   What is the result？（）      

• A、 An exception is thrown.
• B、 The program exists without printing anything.
• C、 An error at line 1 causes compilation to fail.
• D、 An error at line 2 causes the compilation to fail.
• E、 “Running” is printed and the program exits.

第7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.

第8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9题：

2. public class Foo implements Runnable （  3. public void run （Thread t） {  4. system.out.printIn（“Running.”）；  5. }  6. public static void main （String[] args）  {  7. new thread （new Foo（））.start（）； 8. ）  9. ）   What is the result？（）      

• A、 An exception is thrown.
• B、 The program exists without printing anything.
• C、 An error at line 1 causes compilation to fail.
• D、 An error at line 6 causes the compilation to fail.
• E、 “Running” is printed and the program exits.

第10题：

public class X {  public static void main（String [] args） {  try {  badMethod（）；  System.out.print（“A”）；  }  catch （Exception ex） {  System.out.print（“B”）；  }  finally {  System.out.print（“C”）；  }  System.out.print（“D”）；  }  public static void badMethod（） {  throw new RuntimeException（）；  }  }  What is the result？ （） 

• A、 AB
• B、 BC
• C、 ABC
• D、 BCD
• E、 Compilation fails.