chain.forward(request, response);
chain.doFilter(request, response);
request.forward(request, response);
request.doFilter(request, response);
第1题:
在一个Filter中,处理filter的业务的是()方法
第2题:
Given the definition of MyServlet: 11.public class MyServlet extends HttpServlet { 12.public void service(HttpServletRequest request, 13.HttpServletResponse response) 14.throws ServletException, IOException { 15.HttpSession session = request.getSession(); 16.session.setAttribute("myAttribute","myAttributeValue"); 17.session.invalidate(); 18.response.getWriter().println("value=" + 19.session.getAttribute("myAttribute")); 20.} 21.} What is the result when a request is sent to MyServlet?()
第3题:
You develop a Windows Communication Foundation (WCF) service to generate reports. Client applications call the service to initiate report generation but do not wait for the reports to be generated. The service does not provide any status to the client applications. The service class is defined as follows. (Line numbers are included for reference only.)01 [ServiceContract]02 public class ReportGeneratorService03 {04 ...05 private int GenerateReports(int clientID)06 {07 ...08 return 0;09 }10 }You need to ensure that client applications can initiate reports without waiting for status.Which two actions should you perform (Each correct answer presents part of the solution. Choose two.) ()。
A. Insert the following code at line 04. [OperationContract(IsOneWay=true)]
B. Insert the following code at line 04. [OperationContract(AsyncPattern=false)]
C. At line 05, change the GenerateReports method from private to public.
D. Remove line 08. At line 05, change the return type of GenerateReports method to void.
第4题:
1. public class A { 2. public void method1() { 3. B b=new B(); 4. b.method2(); 5. // more code here 6. } 7. } 1. public class B { 2. public void method2() { 3.C c=new C(); 4. c.method3(); 5. // more code here 6. } 7. } 1. public class C { 2. public void method3() { 3. // more code here 4. } 5. } Given: 25. try { 26. A a=new A(); 27. a.method1(); 28. } catch (Exception e) { 29. System.out.print(”an error occurred”); 30. } Which two are true if a NullPointerException is thrown on line 3 of class C?()
第5题:
Which lines of code are valid declarations of a native method when occurring within the declaration of the following class?() public class Qf575 { // insert declaration of a native method here }
第6题:
Given an HttpServletRequest request and an HttpServletResponse response: 41.HttpSession session = null; 42.// insert code here 43.if(session == null) { 44.// do something if session does not exist 45.} else { 46.// do something if session exists47. } To implement the design intent,which statement must be inserted at line 42?()
第7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?()
第8题:
GivenaFilterclassdefinitionwiththismethod:21.publicvoiddoFilter(ServletRequestrequest,22.ServletResponseresponse,23.FilterChainchain)24.throwsServletException,IOException{25.//insertcodehere26.}Whichshouldyouinsertatline25toproperlyinvokethenextfilterinthechain,orthetargetservletiftherearenomorefilters?()
A.chain.forward(request,response);
B.chain.doFilter(request,response);
C.request.forward(request,response);
D.request.doFilter(request,response);
第9题:
class One { void foo() {} } class Two extends One { //insert method here } Which three methods, inserted individually at line 14, will correctly complete class Two?()
第10题:
Given: 11.public class MyServlet extends HttpServlet { 12.public void service(HttpServletRequest request, 13.HttpServletResponse response) 14.throws ServletException, IOException { 15.// insert code here 16.} 17.} and this element in the web application’s deployment descriptor: