int index = 1；   String test = new String；   String foo = test[index]；  What is the result？（）A、 Foo has the value “”B、 Foo has the value nullC、 An exception is thrownD、 The code will not compile

第1题：

public class Test {  public static void main（ String[] args） {  String foo = args[1]；  String bar = args[2]；  String baz = args[3]；  System.out.println（“baz = “ + baz）； }  }   And the command line invocation： java Test red green blue   What is the result？（）  

• A、 baz =
• B、 baz = null
• C、 baz = blue
• D、 Compilation fails.
• E、 An exception is thrown at runtime.

第2题：

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

• A、 Foo has the value of 0.
• B、 Foo has the value of null.
• C、 Foo has the value of true.
• D、 Foo has the value of false.
• E、 An exception is thrown.
• F、 The code will not compile.

第3题：

public class test（  public static void main（string[]args）{  string foo = args [1]；  string foo = args [2]；  string foo = args [3]；  }  ）  And command line invocation： Java Test red green blue   What is the result？（）  

• A、 Baz has the value of “”
• B、 Baz has the value of null
• C、 Baz has the value of “red”
• D、 Baz has the value of “blue”
• E、 Bax has the value of “green”
• F、 The program throws an exception.

第4题：

public class test（   public static void main（stringargs）{   string foo = args [1]；   string foo = args ；   string foo = args ；   }   ）   And command line invocation：  Java Test red green blue  What is the result？ （） 

• A、 Baz has the value of “”
• B、 Baz has the value of null
• C、 Baz has the value of “red”
• D、 Baz has the value of “blue”
• E、 Bax has the value of “green”
• F、 The program throws an exception.

第5题：

String foo = “blue”；  Boolean[]bar = 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6题：

public class Test {  public static void main（String args[]） {  class Foo {  public int i = 3； }  Object o = （Object）new Foo（）；   Foo foo = （Foo）o；  System.out.println（“i = “ + foo.i）； }  }  What is the result？（）  

• A、 i = 3
• B、 Compilation fails.
• C、 A ClassCastException is thrown at line 6.
• D、 A ClassCastException is thrown at line 7.

第7题：

Given：  8.int index = 1：  9.Boolean [] test = new boolcan [3]；  10.boolcan foo = test [index]；   What is the result（）？  

• A、 foo has the value of 0.
• B、 foo has the value of null.
• C、 foo has the value of true.
• D、 foo has the value of false.
• E、 An-exception is thrown.
• F、 The code will not compile.

第8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9题：

int index = 1；   int foo = new int ；   int bar = foo [index]；   int baz = bar + index；   What is the result？（）

• A、 Baz has the value of 0
• B、 Baz has the value of 1
• C、 Baz has the value of 2
• D、 An exception is thrown.
• E、 The code will not compile.

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