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Userdefined Unchecked Exceptions
Java has Userdefined Unchecked Exceptions or not? If answer is YES, How to create Userdefined Unchecked Exceptions?
r.praveenkumar
- Sep 18th, 2008
I think there is no possibility of creating user defined unchecked exceptions.
aleemkh
- Sep 17th, 2008
Unchecked exceptions are those which extend RunTimeException? what do you mean by userdefined unchecked exceptions? Unchecked exceptions are thrown only at run time. The question is ambiguous.
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What is a constructor ?
A constructor is a special member function which will construct an object with user defined values whenever object is created OR A constructor is a special member function which will be called automatically to initialize the data member of a class whenever object is instantiated.
apparao.mca
- Sep 29th, 2008
A java constructor has the same name as the name of the class to which it belongs. Constructor's syntax does not include a return type, since constructors never return a value.
Sukhpal singh
- Jan 29th, 2007
HI The main purpose of constructor to initialize the fields of class . It call automatically ,when object of that class is created
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The term _____________ refers to a class's direct ancestor or to any of its ascendant classes.
Skill/Topic: InheritanceA) Sub ClassB) Super ClassC) Class hierarchy
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Interface and Inheritance
Explain why we go for interface instead of multiple inheritnace?
giridhar49
- Oct 11th, 2008
Suppose we have 3 classes A,B,C. Here C is derived from classes A and B. HERE A and B classes have same method suppose print(). As we know we can call base class methods by creating objects of derived...
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What are all the methods available in the Thread class?
A) isAlive(),join()B) resume(),suspend()C) stop(),start()D) sleep(),destroy()
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Can we make construtor STATIC?
tafazzul hasan
- Feb 20th, 2007
We can not use STATIC with a Constructor. We can use only Public,Private,Protected and Default modifiers with a Constructor.
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Does Java has pointer?
lincolnkal
- Oct 21st, 2008
Yes, Java definately supports POINTERS . But we are not using them externelly. the Java Runtime Environment (JRE) will take care of it. Generally it always a tough task to use pointers by the users. I...
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Inner Class
What is Inner Class? What is use of it?
V.Tamizh
- Dec 2nd, 2008
An inner class is a class that is defined inside another class.Inner class is a safety mechanism.Inner class is hidden from other classes in its outer class.Inner class can access the members of outer...
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Java Constructor
How to use a constructor in a Java program?
justjiten
- Dec 4th, 2008
In a Java program constructor is used for object creation.With the help of new operator we create the new object for the class by calling its constructor.
banduskank
- Jun 30th, 2008
When you want create an object at that time you use the constructor. The purpose of Constructor is only to create object. If you not provide Constructor then compiler create default Constructor to create object.
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There are 50 reserved keywords currently defined in the Java language
A) TrueB) False
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Java iText
I would like to create a PDF file using java and iText , getting data from the database.I am looking for examples.
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How does Java handle integer overflows and underflows
It uses those low order bytes of the result that can fit into the size of the type allowed bythe operation.
sandy2789
- Jan 13th, 2009
Difference Between Over Flow & Under Flow (JAVA) over flow = ex : array> [0][1][2][3][4] onl...
Sony V George
- Apr 5th, 2007
In java there is no point of overflow and underflow, it was there in C. For avoiding that java introduces type casting. Java will allow some more space from the defult space of primtive type.
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Is it possible to write a try within a try statement
aarthiramky
- Jan 24th, 2009
Yes, it is possible to have try block within another try block.The inner try block is basically to identify any specific exceptions if any in that particular block
satheesh reddy chilumula
- Nov 12th, 2005
Ya,It is possible.
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What's the difference between forward and sendRedirect?
kamaleshece
- Jan 27th, 2009
Forward will forward the same request where as the send redirect will create another request for the request which it gets.
encrypted.passion
- Jan 6th, 2008
Response.sendRedirect method retains session values.whereasForward method of the RequestDispatcher interface does not provide you this functionality.
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Printing numbers in spiral shape
I need an algorithm for some program. I'll take some number (say 'n'), then i should print the numbers in spiral shape starting from square(n). Can any one pls help me..Ex: if n=3, it should print like9 8 72 1 63 4 5Thanks in advance
datdo
- Jan 29th, 2009
//spiral//by datdo//translated C codepublic class Spiral {int n =3;public static int SPIRALHEIGHT = n;public static int SPIRALWIDTH = n;public static main(String[] args) { int ...
Gerda
- May 8th, 2008
One of possible solutions:public class NumberSpiralShape { /*** @param args*/public static void main(String[] args) { // TODO Auto-generated method stub int n = 3, i, side = n, x=0, y=0;int tab [...
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Conditional Statements
What are Conditional Statements?
richakharya
- Feb 5th, 2009
The statements which are executable only when it satisfies a particular condition ?example:if(some condition) ? {? ? ? ? // some statement ?}switch (input){case 1:case 2://default:}
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What is difference between string and stringBuffer with example
sankarsansinha
- Feb 5th, 2009
String is immutable
String buffer is mutable
Ex String str = "abc";
str = "new String";
this will create new memory location and stores "new String"
but in String buffer
StringBuffer strBuf = "abc";
strBuf = "new String"
it will overwrite in same memory locationsandesh.giri
- Jun 15th, 2008
Java provides the StringBuffer and String classes, and the String class is used to manipulate character strings that cannot be changed. Simply stated, objects of type String are read only and immutabl...
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An _________ is a special kind of Java program that is designed to be transmitted over the Internet
A) ViewletB) AppletC) ServletD) Object
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The Separator, Comma is Used to separate package names from subpackages and classes
A) TrueB) FalseExplanation: Comma Separates consecutive identifiers in a variable declaration while the Period . is Used to separate package names from subpackages and classes
Java Interview Questions
Ans