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Use of static,final variable
Mohan Raja Gadikota
- May 31st, 2011
Static : Move the variable/methods/class during HDD to RAM. ie; they are available without instantiating the class, by creating an object of that class nd access its methods,members.Final : for Preventing the inheritance further ie; the class with final word as prefix cannot be extend further!
muralidhar.9e
- Nov 23rd, 2010
static variable allocates the memory as globally.It won't reallocate the memory while running.It initializes the memory for the variable only once.final variable tells the variable is final means ...
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What are the types of access modifiers
amitkaushik8
- Jul 26th, 2011
Public,Protected, private and one is default when you don't type any modifier
timmireddy
- Nov 11th, 2009
Access modifiers are applicable to class,variable and methods, some of access modifiers are final,static,synchronized,volatile,native,abstract and transient.
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What is class variables and instance variables?
sujatham
- Aug 11th, 2007
Class variable:? 1. Also called as static variable.2. Variable declared?in the class with static modifier.3. These variables are belong to the class.Instance variable:? 1. Variables declared in the class?without?the static modifier.2. These variables are belongs to the objects.
Tafazzul hasan
- Feb 21st, 2007
Class variables belongs to a Classwhere as an instance variable belongs to an Object. A class variable is shared by all the objects of the class. where as every object contain their own instance variable.
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What is the priority of the Garbage collector thread of jdk.?
A) low-priorityB) highest priorityC) medium priorityD) decided at runtime
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There are 50 reserved keywords currently defined in the Java language
A) TrueB) False
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Imagine there is a class Employee. We create an object of EmployeeEmployee a= New Employee();If we are givingSystem.out.println(a);What gets printed?
dgshivas
- Feb 25th, 2008
If we try to print instance of a class,toString() method gives the out put of hashcode.First if prints the possible appropriate class name followed by @ symbole and hashcode of the class instance.
shivkant.pawan
- Nov 26th, 2007
It call the toString() method of Object class and print string representation of the object. i.e @<hashcode of the object>.
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Name the eight primitive Java type.
mytramesh
- Oct 4th, 2006
We have two type of data types in java those are 1.Primitive data types 2. Referenced Data types or Advanced data types.Primitive datatypes are : these store only singe value.boolean,short,int,char,float,double,byte,longAdvanced Datatypes are :these store group of valuesString,Array,object
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Whatis the difference between the static variable and ordinary variable?gimme an example pls!........
sivanesh.a
- Dec 4th, 2006
Static variable will be shared by other objects also.. so memory is saved.. whereas with normal variables it is not possible.
Guest
- Nov 29th, 2006
Static variable is called even before the instance of the class is created.
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What is the difference between Socket and ServerSocket class in java.net package
kritika jha
- Jun 13th, 2009
Socket class is meant for client side, so in a client side you need to make a object of Socket class for any networking application, whereasFor server side networking application ServerSocket clas...
dinesh_greekinterview
- Feb 20th, 2007
difference b/w ServerSocket and Socket :ServerSocket : &n...
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What is the diffrence between java.util.Date.*; and java.sql.Date.*;?
vaibhavsingla3
- Dec 15th, 2009
Java.util.date is a predefinesd library but java.sql.date is used strore date
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How to convert .class to .java?
How to convert or achieve the program from .class file??
geek_ani
- Feb 1st, 2011
You can?view your .jar or .class files using a Java decompilor. Download the Java decompiler and use it to view these files.
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In Java, if main method call any other method then that method must be_________
1) Private
2) Recursive
3) Static
4) voidnaresh kumar
- Feb 3rd, 2012
3) Static: Because main is static itself so, it can call only static variable/method.
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In Java, Package does not contain__________
1) Class
2) Package
3) Interfaces
4) Objectscirrus
- Feb 19th, 2012
Java packages do not contain objects. This is so, because unlike classes, interfaces, and sub-packages, Java objects are instantiated entities, and do not always exist.
Neha Gupta
- Feb 17th, 2012
Objects. This is because package does contain interfaces like Serializable. Classes and other sub-packages or packages always fall under package.
Object class does fall under java.lang package but Objects are created when any concrete class is instantiated. -
How can we create object of any class without using new keyword?
Devapangu Mangaiah
- Mar 19th, 2012
Using factory method
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Core Java Question
Will it compile and run?? If No ... please explain?
java
public class Test{
public static void main(String asd[]){
System.out.println(" Test!! ");
}
}
protected class A{
}
private class B extends A{
}
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Coding question
Given the age of 10 couples(husband and wife), print Number of years of age difference for all the 10 people Input Specification First 10 inputs contain the ages of all husbands And the next 10 are the ages of all wives Output Specification Output should be exactly 10 lines giving the number of years of the age difference between them. Note: output is a positive integer Sample Input 50 40 53 24 78...
Can a lock be acquired on a class
Yes, a lock can be acquired on a class. This lock is acquired on the class's Class object..
derrick.paul
- Sep 12th, 2008
As your might already know, any synchronisation needs an object (monitor) to acquire lock one. See below for the three different types on how to synchronise code.public class A{ // A monitor obj...
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