Saturday, November 21, 2009
Link Dir
Download
Resources
Music
Home
IT Quiz Menu
Quizzes Home Page
General Quizzes and Trivia
PC Troubleshooting
Networking Guide
Info Tech Glossary
Code Bank
Web Development
IT Quizzes Category
ASP
ASP 2
ASP ADO
ASP Server Side Include
ASP.NET
C# .NET
CISCO-CCNA
Computer Hardware
Computer Technolgy
Computer Trivia
CSS
Database Management
HTML
IIS 6 Administration
Java
JavaScript
Javascript Fundamental
Linux
MCSE 70-291
Network Plus
Networking
Networking 2
OSI Model
PERL
PHP
Project Management
Search Engine Optimization
Server Administrator
SQL
SQL Advanced
SQL Server Administration
VB.NET
Web Designer
Windows 2000 Server
Windows 2003 Server Adminstration
XHTML
XML
Search Web Link
Search Software
Quizzes Main Page
IT Quizzes
Java Quiz
Java Quiz
There are 23 questions in this quiz. Good luck!
Passing grade is 70% = C.
1)
What is the size of a Char?
a)
4 bits
b)
7 bits
c)
8 bits
d)
16 bits
2)
A class cannot be declared:
a)
Static
b)
Private
c)
Default
3)
Following code will result in: int a = 3.5;
a)
Compilation error
b)
Runtime error
c)
a being 3.5
d)
a being 3.
4)
Following code will result in: int a1 = 5; double a2 = (float)a1;
a)
Compilation error
b)
Runtime error
c)
No errors
5)
Following code will result in: int a = 9/0;
a)
Compilation error: Divisions must be in a try block.
b)
Compilation error: DivideByZeroException
c)
Runtime Exception
d)
No Error: a is NaN
6)
Following code will result in: float a = 9/0;
a)
Compilation error: Divisions must be in a try block
b)
Compilation error: DivideByZeroException
c)
Runtime Exception
d)
No Error: a is NaN
7)
A class can be transient
a)
True
b)
False
8)
Following code will result in: class A { int b = 1; public static void main(String [] args) { System.out.println("b is " + b); }}
a)
Compilation error
b)
Runtime Error
c)
Runtime Exception
d)
Output of b is 1
9)
Following code will result in: class A { public static void main(String [] args) {B b = new A(); }} class B extends A {}
a)
Compile error
b)
Runtime Exception
c)
No error
10)
Following code will result in: class A { public static void main(String [] args) {A a = new B(); }} class B extends A {}
a)
Compiler error
b)
Runtime Exception
c)
No errors
11)
Methods that are marked protected can be called in any subclass of that class.
a)
True
b)
False
12)
An abstract class can have non-abstract methods.
a)
True
b)
False
13)
Java keywords are written in lowercase as well as uppercase.
a)
True
b)
False
14)
What is an instanceof
a)
A methods in object
b)
An operator and keyword
15)
Primitive datatypes are allocated on a stack.
a)
True
b)
False
16)
Can you compare a boolean to an integer?
a)
Yes
b)
No
17)
If class A implements an interface does it need to implement all methods of that interface?
a)
Yes, always.
b)
No, not when A is abstract
18)
Integer a = new Integer(2); Integer b = new Integer(2); What happens when you do if (a==b)?
a)
Compiler error
b)
Runtime Exception
c)
True
d)
False
19)
The methods wait(), notify() and notifyAll() in Object need to be called from synchronized pieces of code.
a)
True
b)
False
20)
Inner classes can be defined within methods.
a)
True
b)
False
21)
Synchronized is a keyword to tell a Thread to grab an Object lock before continuing execution.
a)
True
b)
False
22)
The default statement of a switch is always executed.
a)
True
b)
False
23)
How can you prevent a member variable from becoming serialized?
a)
By marking it private
b)
By marking it volatile
c)
By marking it transient
d)
You can not.
E-mail this Quiz to a friend
Bookmark this Quiz
IT Quiz Menu
IT Quizzes Category
IT Quiz Menu IT Quizzes Category