Java Programming Language Quiz Coding

20 Questions | By Cvktech | Last updated: Nov 27, 2017 | Total Attempts: 1295

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Questions and Answers

1.

--Controller Servlet in struts
- A.
  
  ActionServlet
- B.
  
  FrontControllerServlet
- C.
  
  FormBean class
- D.
  
  Action class
2.

Which of the collection classes will follow the InsertionOrder
- A.
  
  ArrayList
- B.
  
  LinkedHash set
- C.
  
  Vector
- D.
  
  All the above
3.

Http protocol is a _____________
- A.
  
  State full
- B.
  
  State less
- C.
  
  Both
- D.
  
  None
4.

Public static void parse(String str) { try { float f = Float.parseFloat(str); } catch (NumberFormatException nfe) { f = 0; } finally { System.out.println(f); } } public static void main(String[] args) { parse("invalid"); } What is the result?

Discuss
- A.
  
  0.0
- B.
  
  Compilation fails.
- C.
  
  A ParseException is thrown by the parse method at runtime
- D.
  
  A NumberFormatException is thrown by the parse method at runtime.
5.

Public class Yippee2 { static public void main(String [] yahoo) { for(int x = 1; x < yahoo.length; x++) { System.out.print(yahoo[x] + " "); } . } } and the command line invocation: java Yippee2 a b c What is the result?
- A.
  
  A b
- B.
  
  B c
- C.
  
  a b c
- D.
  
  Compilation fails.
- E.
  
  An exception is thrown at runtime.
6.

Public class Test { public static void main(String [] args) { int x = 5; boolean b1 = true; boolean b2 = false; f ((x == 4) && !b2 ) System.out.print("1 "); System.out.print("2 ");. if ((b2 = true) && b1 ) System.out.print("3 "); } } What is the result?
- A.
  
  2
- B.
  
  3
- C.
  
  1 2
- D.
  
  2 3
7.

Public class Hello { String title; int value; public Hello() { title += " World"; } public Hello(int value) { this.value = value; title = "Hello"; Hello(); } } and: Hello c = new Hello(5); System.out.println(c.title); What is the result?
- A.
  
  Hello
- B.
  
  Hello World
- C.
  
  Compilation fails.
- D.
  
  Hello World 5
8.

Public class Wow { public static void go(short n) {System.out.println("short");} public static void go(Short n) {System.out.println("SHORT");} public static void go(Long n) {System.out.println(" LONG");} public static void main(String [] args) { Short y = 6; int z = 7; go(y); go(z); } } What is the result?
- A.
  
  Short LONG
- B.
  
  SHORT LONG
- C.
  
  Compilation fails.
- D.
  
  An exception is thrown at runtime.
9.

Which of the following are correct as per MVC architecture
- A.
  
  Two jsp files should interact with each other.
- B.
  
  Every web application should contain only one controller.
- C.
  
  View can directly interact with model.
- D.
  
  A web application can contain 4 layers
10.

<% int a = 10; %> <%! int a = 20; %> <%! int b = 30; %> The value of b multiplied by a is <%= b * a %>
- A.
  
  The code will not compile
- B.
  
  The value of b multiplied by a is 30
- C.
  
  The value of b multiplied by a is 300
- D.
  
  The value of b multiplied by a is 600
11.

If i want to use the name of the person across multiple pages then we have to store that person name in ___
- A.
  
  Request
- B.
  
  Session
- C.
  
  Application
- D.
  
  Servletrequest
12.

Using which object we can reduce the network traffing in JDBC
- A.
  
  Statement
- B.
  
  PreparedStatement
- C.
  
  ResultSet
- D.
  
  CallableStatement
13.

Using which class object we can call Stored Procedures inJDBC
- A.
  
  Statement
- B.
  
  PreparedStatement
- C.
  
  ResultSet
- D.
  
  CallableStatement
14.

Which object is responsible for reading confiuguration file in hibernate
- A.
  
  Session
- B.
  
  SessionFactory
- C.
  
  Configuration
- D.
  
  Transaction
15.

Which of the following is a Legacy class in collections
- A.
  
  HashSet
- B.
  
  ArrayList
- C.
  
  Vector
- D.
  
  TreeSet
16.

What will be the output of the following JSP page? <% a = 100; %> <% int a = 200; %> <%! int a = 300; %> a = <%= a %>, <%= this.a %>

Discuss
- A.
  
  A = 200, 100
- B.
  
  A = 300, 100
- C.
  
  A = 100, 200
- D.
  
  a = 200, 300
17.

Which of the following design patterns is used to separate the task of writing the GUI screens and business logic? Select 1 correct option.
- A.
  
  View Logic
- B.
  
  Front Controller
- C.
  
  Model View Controller
- D.
  
  Business View
18.

Regarding the processing of a BodyTag handler, in which of the following cases a BodyContent object will be "pushed" into the pageContext? Select 1 correct option.
- A.
  
  If the doStartTag() returns EVAL_BODY_INCLUDE
- B.
  
  If the doStartTag() returns EVAL_BODY_BUFFERED
- C.
  
  If the doStartTag() returns SKIP_BODY
- D.
  
  If the doStartTag() DOES NOT return SKIP_BODY
19.

Your web application named "FWorks" uses SpecialMath.class. This is an unbundled class and is not contained in any jar file. Where will you keep this class file? Select 1 correct option.
- A.
  
  FWorks/WEB-INF
- B.
  
  FWorks/WEB-INF/classes
- C.
  
  FWorks/WEB-INF/lib/classes
- D.
  
  FWorks/classes
20.

Identify the implicit objects available to EL expressions.
- A.
  
  RequestScope
- B.
  
  PageScope
- C.
  
  Header
- D.
  
  PageContext
- E.
  
  All the avove

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