单选题Given: Which statement is true?（）A Compilation succeeds.B Class A does not compile.C The method declared on line 9 cannot be modified to throw TestException.D TestA compiles if line 10 is enclosed in a try/catch block that catches TestException.

第1题：

第2题：

第3题：

第4题：

You are creating a Windows Communication Foundation (WCF) service that is implemented as follows. (Line numbers are included for reference only.) 01 [ServiceContract] 02 [ServiceBehavior(IncludeExceptionDetailsInFaults = true)] 03 public class OrderService 04 { 05 [OperationContract] 06 public void SubmitOrder(Order anOrder) 07 { 08 try 09 { 10 ... 11 } 12 catch(DivideByZeroException ex) 13 { 14 ... 15 } 16 } 17 } You need to ensure that the stack trace details of the exception are not included in the error information sent to the client. What should you do?（）

• A、Replace line 14 with the following line: throw;
• B、Replace line 14 with the following line: throw new FaultException(anOrder, ex.ToString());
• C、After line 05, add the following line: [FaultContract(typeof(FaultException))] Replace line 14 with the following line: throw ex;
• D、Alter line 05, add the following line: [FaultContract(typeof(FaultException))] Replace line 14 with the following line: throw new FaultException(anOrder, "Divide by zero exception");

第5题：

Class TestException  1. public class TestException extends Exception {  2. } Class a：  1. public class a {  2.  3. public String sayHello（String name） throws TestException {  4.  5. if（name == null） {  6. throw new TestException（）；  7. }  8.  9. return “Hello “+ name；  10. }  11.  12. }  A programmer wants to use this code in an application： 45. A a=new A（）；  46. System.out.println（a.sayHello（”John”））；  Which two are true？（）

• A、 Class a will not compile.
• B、 Line 46 can throw the unchecked exception TestException.
• C、 Line 45 can throw the unchecked exception TestException.
• D、 Line 46 will compile if the enclosing method throws a TestException.
• E、 Line 46 will compile if enclosed in a try block， where TestException is caught.

第6题：

第7题：

Which the statement is true？（）

• A、 The Error class is a Runtime Exception.
• B、 No exceptions are subclasses of Error.
• C、 Any statement that may throw an Error must be enclosed in a try block.
• D、 any statement that may throw an Exception must be enclosed in a try block.
• E、 Any statement that may throw an Runtime Exception must be enclosed in a try block.

第8题：

第9题：

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. }  Given：  31. public void method（） {  32. A a=new a（）；  33. a.method1（）；  34. }  Which 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.

第10题：

What is wrong with the following code？（）   class MyException extends Exception {}   public class Qb4ab {   public void foo（） {  try {  bar（）；  } finally {  baz（）；   } catch （MyException e） {}  }   public void bar（） throws MyException {   throw new MyException（）；  }   public void baz（） throws RuntimeException {   throw new RuntimeException（）；   }   }  

• A、Since the method foo（） does not catch the exception generated by the method baz（）， it must      declare the RuntimeException in its throws clause.
• B、A try block cannot be followed by both a catch and a finally block.
• C、An empty catch block is not allowed.
• D、A catch block cannot follow a finally block.
• E、A finally block must always follow one or more catch blocks.