|Home |Login |Registration |Struts Step by Step Tutorial |Hibernate Step by Step Tutorial |Spring Step by Step Tutorial |JSP Step by Step Tutorial |JDBC Step by Step Tutorial |Web Services Step by Step Tutorial |EJB fundamentals | ORACLE Step by Step Tutorial | SCJP 5.0 and SCJP 6.0 Study Guide | SCWCD 5.0 Study Guide | SCJP Tips
Java mock test | SCJP mock test | SCJP DUMP | SCBCD mock test |Java online test exam | JSP online test | ORACLE online test | Hibernate online test | Servlet online test | Struts online test | EJB online test | C online test | C++ online test | Aptitude online test

Java interview questions | JSP interview questions | ORACLE interview questions | Hibernate interview questions | Servlet interview questions | Struts interview questions | JDBC interview questions | C/C++ interview questions | Spring interview questions | JMS interview questions | Informatica interview questions | EJB interview questions | OOPS and Design Pattern interview questions
1600 PMP mock questions 1400 CAPM mock questions 800 SCJP 6 mock questions 600 OCAJP 7 mock questions 590 OCPJP 7 mock questions 556 SCWCD 5 mock questions 500 OCEJWCD 6 mock questions pdfDownload (java,struts, hibernet etc) JobsJobs and Walkins

 

Recent Questions

  • How to retrieve a key and Value from a map ? view answer
  • Why can an interface supertype call methods that belong to Object class? view answer
  • Q. What is difference between shallow copy and deep copy ? view answer
  • Q.Why to override equals() and hashCode()? and How i can implement both equals() and hashCode() for Set ? view answer
  • Q.How to sort list of objects ( User Defined) using comparator? in Descending Order. view answer
  • Q. How to sort list of objects ( User Defined) using comparator? view answer
  • What is the difference between int and Interger? view answer
  • Singleton Double-checked locking in Java? view answer
  • What are the parameters to follow Creating and Destroying Objects in Java? view answer
  • Q.What are the different scopes for Java variables? view answer
  • Q.What method must be implemented by all threads? view answer
  • Q.Can an unreachable object become reachable again? view answer
  • Q.What are the steps in the JDBC connection? view answer
  • Q.How are this() and super() used with constructors? view answer
  • Q.What is the difference between static and non-static variables? view answer
  • Q.What is the purpose of finalization? view answer
  • Q.Does garbage collection guarantee that a program will not run out of memory? view answer
  • Q.What is synchronization and why is it important? view answer
  • Q.What is daemon thread and which method is used to create the daemon thread? view answer
  • Q.What are synchronized methods and synchronized statements? view answer
  • Q.If I write System.exit (0); at the end of the try block, will the finally block still execute? view answer
  • Q.If I write return at the end of the try block, will the finally block still execute? view answer
  • Q.Is it necessary that each try block must be followed by a catch block? view answer
  • Q.What is the basic difference between the 2 approaches to exception handling. 1> try catch block and 2> specifying the candidate exceptions in the throws clause? When should you use which approach? view answer
  • Q.What are the different ways to handle exceptions? view answer
  • Q.What is the difference between error and an exception? view answer
  • Q: What is wrapper class? Explain with example? view answer
  • Q.What is serialization? Explain with example? view answer
  • Q.What one should take care of while serializing the object? view answer
  • Q. When you serialize an object, what happens to the object references included in the object? view answer
  • Q.What happens to the static fields of a class during serialization? view answer
  • Q. Objects are passed by value or by reference? view answer
  • Q. Primitive data types are passed by reference or pass by value? view answer
  • Q. What type of parameter passing does Java support? view answer
  • Q.Can a top level class be private or protected? view answer
  • Q.What is the default value of an object reference declared as an instance variable? view answer
  • Q.What is the difference between declaring a variable and defining a variable? view answer
  • Q. What are different types of inner classes? view answer
  • Q. What is Overriding? view answer
  • Q.What are Checked and UnChecked Exception? view answer
  • Q. What is final? view answer
  • Q.What is static in java? view answer
  • What is an abstract class? view answer
  • Q. What are the modifiers in Java ? view answer
  • Q.Difference between HashMap and HashTable? view answer
  • Q.Difference between Vector and ArrayList? view answer
  • Q.Difference between ArrayList and LinkedList? view answer
  • Q.What are pass by reference and passby value in Java? view answer
  • Q. When we go for Abstract and Interface in Java? view answer
  • Q.What is the difference between interface and abstract class? view answer
  • Q.What are the Garbage collection algorithms in Java? view answer
  • Q.What is garbage collection and the purpose of garbage collection in Java? view answer
  • Q. What is the difference between an Interface and an Abstract class? view answer

!!! Java Frequently Asked Questions !!!

Q.What are the different scopes for Java variables?

SCJP 1.5/1.6 Exam Kit

!!!Answer!!!- From Technical Expert

The scope of a Java variable is determined by the context in which the variable is declared. Thus a java variable can have one of the three scopes at any given point in time.
1. Instance : - These are typical object level variables, they are initialized to default values at the time of creation of object, and remain accessible as long as the object accessible.
2. Local : - These are the variables that are defined within a method. They remain accessbile only during the course of method excecution. When the method finishes execution, these variables fall out of scope.
3. Static: - These are the class level variables. They are initialized when the class is loaded in JVM for the first time and remain there as long as the class remains loaded. They are not tied to any particular object instance

Answered By : null Replied Date : Feb 24 2012
Answer :

Answered By : null Replied Date : Feb 13 2012
Answer :

Answered By : null Replied Date : Jan 26 2012
Answer :

Answered By : null Replied Date : Nov 10 2011
Answer :

Answered By : null Replied Date : Nov 6 2011
Answer :

Answered By : null Replied Date : Oct 18 2011
Answer :

Answered By : null Replied Date : Jul 1 2011
Answer :

Answered By : null Replied Date : Jun 18 2011
Answer :

Answered By : null Replied Date : May 19 2011
Answer :

Answered By : null Replied Date : May 1 2011
Answer :

Answered By : null Replied Date : May 1 2011
Answer :

Answered By : null Replied Date : Apr 30 2011
Answer :

Answered By : null Replied Date : Mar 29 2011
Answer :

Answered By : null Replied Date : Mar 28 2011
Answer :

Answered By : null Replied Date : Mar 15 2011
Answer :

Answered By : null Replied Date : Jan 20 2011
Answer :

Answered By : null Replied Date : Jan 15 2011
Answer :

Answered By : null Replied Date : Jan 13 2011
Answer :

Answered By : null Replied Date : Dec 27 2010
Answer :

Answered By : null Replied Date : Dec 27 2010
Answer :

Answered By : null Replied Date : Dec 24 2010
Answer :

Answered By : null Replied Date : Nov 19 2010
Answer :

Answered By : null Replied Date : Sep 26 2010
Answer :

Answered By : null Replied Date : Aug 1 2012
Answer :

Answered By : null Replied Date : Sep 25 2012
Answer :

Answered By : null Replied Date : Sep 30 2012
Answer :

Answered By : null Replied Date : Oct 10 2012
Answer :

Answered By : null Replied Date : Oct 27 2012
Answer :

Answered By : null Replied Date : Nov 7 2012
Answer :

Answered By : null Replied Date : Nov 28 2012
Answer :

Answered By : null Replied Date : Feb 11 2013
Answer :

Answered By : null Replied Date : May 26 2013
Answer :

 

You can also contribute to this answer:

Your Name:
Answer:

 
Ask Question and get answer from Expert.
View Answers List from Expert.

The information you are posting should be related to java and ORACLE technology. Not political.