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Hi, can we declare non static variables in static methods?if so plz explain by an example?
vinaymudgil007
- Jun 12th, 2008
yes, we can declare and they would be local to the block.Here is an example.....class Test { public static void main(String[] args) { ...
Seema
- Feb 2nd, 2007
Declaration of i is outside static method, so it is giving error "can not make static reference to non static field" if it is declared inside then it will print 10.
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Abstract class is a partially implemented class so, How can we call an abstract method without creating a subclass.
navneetgoyal2000
- Jan 6th, 2011
I am not sure, but if ABS class can have a static member function (I am not sure either about if ABS class can have static member function), then without instantiating an OBJ of ABS class, the class function can be invoked.Guys, please check it, and update here...It will be helpful for others too.
sayoke
- Dec 12th, 2006
Another useful method is to use reflextion api. But this is not recommended. It will also ask users knoledge to a very lower level.
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Java Connection Pooling Questions
1.What is save point?2.Which among the four drivers is pure Java driver?3.What is Connection Pooling ?4.How differ servlet from its peer Technology?5.What are the parameters used in Connection pooling?6.What are the Normalization Rules? Define the Normalization?9.What are batch updates.10.How many JDBC drivers are there ?
nuttyvarun
- Feb 21st, 2008
Connection pooling is a technique of creating and managing a pool of connections that are ready for use by any thread that needs them, and generally leads to more predictable resource usage under load...
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What is Shallow cloning in Java ?
TypeEE
- Feb 11th, 2009
By default, cloning yields a shallow copy. By shallow, we mean the object is copied, but the contained objects are not. What a deep copy does it copy the cloned object, as well as all the objects with...
Naveenjavasun
- Jul 8th, 2008
When we need a copy of the object we go for cloning. When an object is shallow coned the parent object or top level object and its members are duplicated, where as the low level objects are not duplic...
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Every application should have a main() method. Under which class does the main() method comes under?
shouvanik1979
- Mar 31st, 2009
Main() method should be present in the java class which we execute at the command prompt. for example. c:/> java abc where abc is the class which must have a main() method, because JVM calls the main method of this class after it loads all the classes into its memory.
vawani
- Nov 4th, 2008
If you are writing a program in java then you have to put main method in a class, so that class is the owner of main method but since we r declaring it as public it is available to a...
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What is the difference between core java and advanced java
Naveenjavasun
- Jul 8th, 2008
According to sun system there is no corejava and advanced java.only j2se,j2eeNo advanced java is there as per sun micro... Fucking Training centers daivide j2ee into two patrs. Dont tell in interview i Know Advanced Java.
satheeshraja
- Jun 20th, 2008
1. In core Java, we dont have any solutions for dynamic process but still core java is a very efficient for developers and this is the strong basement for applications.2. Advanced Java has complete s...
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Remove() method collection
Which Underlying Collection will provide the remove() method?
rariedel
- May 28th, 2008
Collection is an interface, and whatever class implements the interface must implement the remove() method.This question is not a complete sentence and that makes it kind of difficult to understand the intent and then answer it appropriately.
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Is it possible to serialize a single member in a class?
suppose i have 2 members in my class can i serialize a single member? Is there any way to do that?
ashutoshwithashi
- Feb 13th, 2010
Yes, it is possible to serialize a single member in a class from the externializable interface as we can control the searization process with the and by searilizing the single memer through writeExternal() and readExternal() method we can do it.
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Determining the order of threads
Q.--" I created five(5) thread instances,say "1","2","3","4","5" and start all of them at the same time,one after the other. The priorities for the threads are same.what should be done so that the threads run concurrently in the same order,i.e1,2,3,4,5(Is there any way at all)"?
Vijay
- Jan 10th, 2014
We can do that by using the join. In the second thread run method, we can call the join on first thread object. In the third thread run method, we can call the join on second thread object. Like this ...
mduhan
- Apr 8th, 2013
We have to implement run method to create a thread.We need to make that method synchronized so that only one thread can go inside and control will be given to second only and only of first is completed.
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Why we are using OOPS?
sivapurammani
- Dec 16th, 2013
Before introducing OOPS some other concepts are also introduced into the computer world, for example Procedure Oriented Language(The best example for this is C language) but these concepts are working...
mukesh jha
- Aug 8th, 2013
OOPS ?stands for object oriented programming . They are ? 1. Abstraction 2. Encapsulation 3. Inheritance 4. Polymorphism Abstraction is representation of ?some property without giving backgroun...
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What is the difference between inheritance and extends?
I have not mistaken extends for polymorphism or encapsulation or anything else.. my question is correct!!!
ANKIT SHARMA
- Feb 14th, 2016
In Inheritance the object aquires all the properties & behaviour of parent object
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How can we restrict class to be inherited?
kamal
- Jan 2nd, 2012
Use the final key word to do this
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Do primitive types have a class representation
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How all can you instantiate final members
Venkatesh
- Jul 27th, 2007
The other way of instantiating final member is on method argument (Just in case we do not want the value to be changed within the method, ex void Check(final String a){ }
avinashkt
- Nov 27th, 2006
Final members can be instantiated either at the time of declarationor it can be instantiated in the constuctor of the class.for ex. class a { &...
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1)what are the other ways to create an object otherthan creating as new object?
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What is BYTE Code?
sampra
- Feb 20th, 2008
BYTE code is a code genrated by JVM its in binary form and can be understood by JVM only
nuttyvarun
- Feb 20th, 2008
Bytecode is a term (others are p-code etc) used to denote a form of intermediate code, a binary representation of an executable program designed to be executed by an interpreter or virtual machine rat...
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What is the meaning of "final" keyword?
sambitsahu
- Jan 5th, 2010
Final Variable :: ConstantFinal Method :: Can't OverrideFinal Class :: Can't instatiate
Core Java Interview Questions
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