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？（）  

1. public class SwitchTest { 
2. public static void main （String []args）  { 
3. System.out.PrintIn（“value =” +switchIt（4））； 
4. } 
5. public static int switchIt（int x）  { 
6. int j = 1； 
7. switch （x） { 
8. case 1： j++； 
9. case 2： j++； 
10. case 3： j++； 
11. case 4： j++； 
12. case 5： j++； 
13. default：j++； 
14. } 
15. return j + x； 
16. } 
17. }    
What is the output from line 3？（）  

public class ExceptionTest { 
class TestException extends Exception {} 
public void runTest （） throws TestException {} 
public void test （） /* Point X*/  { 
runTest （）； 
} 
}  
At point X on line 4， which code can be added to make the code compile？（）

1.public class Test { 
2.public static void main （String args[]） { 
3.class Foo { 
4.public int i = 3； 
5.} 
6.Object o = （Object） new Foo（）； 
7.Foo foo = （Foo）o； 
8.System.out.printIn（foo. i）；
9. } 
10.}  
What is the result？（）