foo and bar are public references available to many other threads. foo refers to a Thread and bar is an Object. The thread foo is currently executing bar.wait（）. From another thread， which statement is the most reliable way to ensue that foo will stop exe

第1题：

第2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3题：

第4题：

package foo； public class Outer （  public static class Inner （  ）  ）   Which statement is true？ （） 

• A、 An instance of the Inner class can be constructed with “new Outer.Inner （）”
• B、 An instance of the inner class cannot be constructed outside of package foo.
• C、 An instance of the inner class can only be constructed from within the outer class.
• D、 From within the package bar， an instance of the inner class can be constructed with “new inner（）”

第5题：

public class Base {  public static final String FOO = “foo”；  public static void main（String[] args） {  Base b = new Base（）；  Sub s = new Sub（）；  System.out.print（Base.FOO）；  System.out.print（Sub.FOO）；  System.out.print（b.FOO）；  System.out.print（s.FOO）；  System.out.print（（（Base）s）.FOO）；  } }  class Sub extends Base {public static final String FOO=bar；}  What is the result？（） 

• A、 foofoofoofoofoo
• B、 foobarfoobarbar
• C、 foobarfoofoofoo
• D、 foobarfoobarfoo
• E、 barbarbarbarbar
• F、 foofoofoobarbar
• G、 foofoofoobarfoo

第6题：

第7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8题：

第9题：

10. interface Foo { int bar（）； }  11. public class Sprite {  12. public int fubar（ Foo foo） { return foo.bar（）； }  13. public void testFoo（） {  14. fubar（  15. // insert code here  16.）；  17. }  18. }  Which code， inserted at line 15， allows the class Sprite to compile？（） 

• A、 Foo { public int bar（） { return 1； } }
• B、 new Foo { public int bar（） { return 1； } }
• C、 newFoo（） { public int bar（）{return 1； } }
• D、 new class Foo { public int bar（） { return 1； } }

第10题：

You have read/write permission on an ordinary file foo. You have just run In foo bar. What would happen if you ran rm foo？（）

• A、 foo and bar would both be removed.
• B、 foo would be removed while bar would remain accessible.
• C、 foo would be removed， bar would still exist but would be unusable.
• D、 Both foo and bar would remain accessible.
• E、 You would be asked whether bar should be removed.