Core Java Interview Questions
Questions Answers Views Company eMail

How many times garbage collector will invoke an object?s finalize() method?

4 6078

How applets will communicate with each other?

1 3567

What method is used to compare two strings ?

4 8504

How to know the host from which Applet is originated?

Wipro,

1 2771

How to prevent a field from serialization ?

2 9095

How to add panel to a Frame?

5 13075

How can a class be accessed, If no access modifiers are declared?

4 6135

How to access a method that it declared as protected?

3 4909

How to access a variable if it is declared as private?

3 5879

How to re-get an object that is collected by garbage collector?

1 3382

What we have to do, when we don't want to implement all methods of an interface?

5 6839

How to display names of all components in a Container?

Microsoft, Wipro,

2497

Name the package that most of the AWT events that supports event-delegation model are defined?

2 5591

What are Inner classes?

4 5422

Is &&= a valid Java operator?

2 12249


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Un-Answered Questions { Core Java }

What is the function of java?

519


Can we instantiate interface in java?

678


What is a flag variable?

567


What does a za z0 9 mean?

570


What's the purpose of static methods and static variables?

600






What is a numeric literal?

534


What is a wrapper method?

539


What does yield method of the thread class do?

585


What are the two types of exceptions in java? Which are the differences between them?

520


What is double word?

543


Is java type safe?

515


What are methods of a class?

544


Is vector thread safe in java?

565


What is callablestatement? How you can call stored procedure to pass in parameter?

547


Difference between string, stringbuffer and stringbuilder?

570