单选题Given: 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”.

第2题：

public class Test {   public static void main （String args） {  string foo = “blue”；  string bar = foo；   foo = “green”；   System.out.printIn（bar）；   }   }   What is the result？（）  

• A、 An exception is thrown.
• B、 The code will not compile.
• C、 The program prints “null”
• D、 The program prints “blue”
• E、 The program prints “green”

第3题：

第4题：

public class TestOne {  public static void main （String[] args） throws Exception {  Thread.sleep（3000）；  System.out.println（”sleep”）；  }  }  What is the result？（） 

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

第5题：

public class foo {  public static void main （string[]args）  try {return；}  finally {system.out.printIn（“Finally”）；}  }  What is the result？（）

• A、 The program runs and prints nothing.
• B、 The program runs and prints “Finally”
• C、 The code compiles， but an exception is thrown at runtime.
• D、 The code will not compile because the catch block is missing.

第6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7题：

public class foo {   public static void main （stringargs）   try {return；}   finally {system.out.printIn（“Finally”）；}   }     What is the result？（）  

• A、 The program runs and prints nothing.
• B、 The program runs and prints “Finally”
• C、 The code compiles， but an exception is thrown at runtime.
• D、 The code will not compile because the catch block is missing.

第8题：

第9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10题：

Given  1.  public class Foo {  2.  public static void main （String [] args） }  3.  try { return；}  4.  finally { Syste.out.printIn （“Finally”）；}  5. }  6. }   What is the result（　）？

• A、 The program runs and prints nothing.
• B、 The program runs and prints “Finally”.
• C、 The code comiles. But an exception is thrown at runtime.
• D、 The code will not compile because the catch block is missing.