SCJP題庫第128題

 

Given:

1. public class A{

2. public void Method1(){

3.   try{

4.     B b = new B();

5.     b.Method2();

6.     //more code here

7. }catch(TestException te){

8. throw new RuntimeException(te);

9. }

10. }

11. }

1. public class B{

2.   public void method2() throws

        TestException{

3.     //more code here

4. }

5. }

1. public class TestException extends     

      Exception{

2. }

And given:

31. public void method(){

32. A a = new A();

33. a.method1();

34. }

Which statement is true if a TestException is thrown on line 3 of class B?

 

 

A. Line 33 must be called within a try block.

B. The exception thrown by method1 in class A is not required to be caught.

C. The method declared on line 31 must be declared to throw a RuntimeException.

D. On line 5 of class A, the call to method2 of class B does not need to be placed in a try/catch block.

 

Ans: B

 

解說:

8行丟出的RuntimeException(與Error)是不必補捉的。