A Java Quiz
A Java Quiz
- 1.JTable has which of the following functions?
- A.
It stores data
- B.
It renders data
- C.
Both of the above
- D.
None of the above
- 2.Statement.executeUpdate(); method is used for fetching the data from the database from netbeans?
- A.
True
- B.
False
- 3.Statement.executeUpdate(); method is used for fetching the data from the database from netbeans?
- A.
True
- B.
False
- 4.JOptionPane.showInputDialog() will return?
- A.
Int
- B.
String
- C.
Double
- D.
Object
- 5.Which of the following needs to be imported for java jdbc connectivity JFrame project from netbeans?
- A.
Javax.sql.*;
- B.
Java.sql.*;
- C.
Javac.sql.*;
- D.
Java.sql;
- 6.You want to take the input of Hobbies from the user, ie Sports, Movies , Traveling etc which of the following controls would be the most suitable?
- A.
Radio Button
- B.
Check Box
- C.
Text Field
- D.
Combo box
- 7.Which of the following SQL objects will store the data retrieved through a Query?
- A.
Connection
- B.
Driver
- C.
Statement
- D.
ResultSet
- 8.Which of the following needs to be imported for java jdbc connectivity JFrame project from netbeans?
- A.
Javax.sql.*;
- B.
Java.sql.*;
- C.
Javac.sql.*;
- D.
Java.sql;
- 9.Class.forName() method is used for?
- A.
Firing the query
- B.
Getting the connection
- C.
Registering the Driver
- D.
None of the above
- 10.round and pow are methods of?
- A.
Util package
- B.
Math package
- C.
Lang package
- D.
Net package
- 11.Which keyword is used for implementing inheritance in java?
- A.
Implements
- B.
Extends
- C.
Inherits
- D.
Derives
- 12.Combination of two or more different kinds of inheritances is called?
- A.
Combination Inheritance
- B.
Hybrid Inheritance
- C.
Hierarchical Inheritance
- D.
Multiple Inheritance
- 13.Calender is a static class?
- A.
True
- B.
False
- 14.Java is object oriented language because it supports classes and encapsulation?
- A.
True
- B.
False
- 15.Which of the following is used to add or delete from a JList?
- A.
DefaultListModel
- B.
ListModel
- C.
AddElement()
- D.
RemoveElement()
- 16.for using date and calender which package should be imported?
- A.
Math
- B.
Util
- C.
Net
- D.
Applet
- 17.The overloaded methods are distinguished by both the return type and signature of the method?
- A.
True
- B.
False
- 18.How many types of dialogs are supported by jOptionPane?
- A.
1
- B.
2
- C.
3
- D.
4
- 19.Each row of a JTable in java is added using?
- A.
String
- B.
Object
- C.
Component
- D.
Panel
- 20.Which of the following methods is used by DefaultTableModel class to add rows to table.
- A.
AddElement()
- B.
AddRow()
- C.
AddRow(Object newrow)
- D.
AddRows()
- 21.Arrange the events in the order they need to be carried out 1. Extract data from result set 2. import the sql package 3. Execute Query 4.Open a connection
- A.
1,3,2,4
- B.
4,3,2,1
- C.
3,2,4,1
- D.
2,4,3,1
- 22.The MySql service is available by default at which of the following ports?
- A.
6303
- B.
3606
- C.
3303
- D.
3306
- 23.The Statement.executeQuery() will return?
- A.
Int
- B.
String
- C.
Object
- D.
ResultSet
- 24.Super keyword is used for which of the two purposes?
- A.
Refer to base class members with same name as in derived class in the derived class
- B.
Calling the base class destructors
- C.
To create new objects of the base class
- D.
Passing parameters to base class constructor
- 25.The Statement.executeUpdate() will return?
- A.
Int
- B.
String
- C.
Object
- D.
ResultSet
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