单选题What is the result？（）A  The program runs and prints nothing.B  The program runs and prints “Equal”.C  An error at line 5 cause compilation to fail.D  The program runs but aborts with an exception.

第1题：

1. public class X {  2. public static void main （String[]args）   {  3. int [] a = new int [1]  4. modify（a）；  5. System.out.printIn（a[0]）；  6. }  7.    8. public static void modify （int[] a）  {  9.   a[0] ++；  10.    } 11. }       What is the result？（）

• A、 The program runs and prints “0”
• B、 The program runs and prints “1”
• C、 The program runs but aborts with an exception.
• D、 An error “possible undefined variable” at line 4 causes compilation to fail.
• E、 An error “possible undefined variable” at line 9 causes compilation to fail.

第2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3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4题：

 public class X {   public static void main （String[]args）   {   string s = new string （“Hello”）；   modify（s）；   System.out.printIn（s）；   }   public static void modify （String s）  {   s += “world!”；      }   }      What is the result？（）    

• A、 The program runs and prints “Hello”
• B、 An error causes compilation to fail.
• C、 The program runs and prints “Hello world!”
• D、 The program runs but aborts with an exception.

第5题：

public class ForBar {   public static void main（String args） {   int i = 0， j = 5；   tp： for （；；） {   i ++；   for（；；）   if（i > --j） break tp；   }   system.out.printIn（“i = ” + i + “， j = “+ j）；   }   }   What is the result？ （） 

• A、 The program runs and prints “i=1， j=0”
• B、 The program runs and prints “i=1， j=4”
• C、 The program runs and prints “i=3， j=4”
• D、 The program runs and prints “i=3， j=0”
• E、 An error at line 4 causes compilation to fail.
• F、 An error at line 7 causes compilation to fail.

第6题：

1. public class ForBar  {  2. public static void main（String []args）   {  3.   int i = 0， j = 5；  4. tp： for （；；）  {  5. i ++；  6. for（；；）  7. if（i > --j） break tp；  8. }  9. system.out.printIn（“i = ” + i + “， j = “+ j）；  10. }  11. }   What is the result？（）  

• A、 The program runs and prints “i=1， j=0”
• B、 The program runs and prints “i=1， j=4”
• C、 The program runs and prints “i=3， j=4”
• D、 The program runs and prints “i=3， j=0”
• E、 An error at line 4 causes compilation to fail.
• F、 An error at line 7 causes compilation to fail.

第7题：

public class X {   public static void main （Stringargs） {   int a = new int [1]   modify（a）；   System.out.printIn（a[0]）；   }   public static void modify （int a） {   a[0] ++；    }    }   What is the result？（）  

• A、 The program runs and prints “0”
• B、 The program runs and prints “1”
• C、 The program runs but aborts with an exception.
• D、 An error “possible undefined variable” at line 4 causes compilation to fail.
• E、 An error “possible undefined variable” at line 9 causes compilation to fail.

第8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9题：

public class X {   public static void main （Stringargs） {   String s1 = new String （“true”）；   Boolean b1 = new Boolean （true）；   if （s2.equals（b1）） {   System.out.printIn（“Equal”）；   }   }   }   What is the result？ （） 

• A、 The program runs and prints nothing.
• B、 The program runs and prints “Equal”
• C、 An error at line 5 causes compilation to fail.
• D、 The program runs but aborts with an exception.

第10题：

 public class Test {  public static void replaceJ（string text）  {  text.replace （‘j’， ‘l’）；  }  public static void main（String args[]）  {  string text = new String （“java”）  replaceJ（text）；  system.out.printIn（text）；  }  }      What is the result？（）  

• A、 The program prints “lava”
• B、 The program prints “java”
• C、 An error at line 7 causes compilation to fail.
• D、 Compilation succeeds but the program throws an exception.