Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

Can we declare variables inside a method as Final Variables?

3 12573

Can you call a constructor within a constructor?

7 15683

Can you declare a static variable in a method?

7 17255

How the elements are organized in GridLayout?

2 5139

How are this and super used?

IBM,

7 12333

How are this() and super() used with constructors?

9 19792

Without creating a new object, How you can retrieve a String or other object?

1 5290

How GUI component handle its own events?

1 5335

How you can create a radio buttion using Checkbox class?

1 4967

Can an unreachable object become reachable again?

DELL,

3 22409

Can applet in different page/s communicate with each other?

1 4629

How to add and remove nodes in Jtree?

1 3331

What is deadlock and how to avoid this?

2 6616

How to avoid the runtime exception ?

2 10194

How the elements are organized in BorderLayout?

5 8731

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Un-Answered Questions { Core Java }

Explain about public and private access specifiers?

1059

What is meant by class?

1005

What is meant by class loader? How many types are there?

1254

What is flag in java?

993

Is static a keyword in java?

984

please send me hr interview questions in it industry

2125

What will happen if static modifier is removed from the signature of the main method?

970

what is the final keyword denotes in java?

1091

Explain importance of inheritance in java?

1028

Can array grow dynamically in java?

983

What is difference between hashset and hashmap?

1118

What is api data?

1004

In a container there are 5 components. I want to display the all the components names, how will you do that one?

1044

what is aggregation in java?

1016

2) Suppose there are 5 directories having lot of files (say txt files) in each directory. 2 things :- 2.1) You want to search for filenames which have a particular pattern. 2.2) Out of these filtered files you want to search for a particular keyword or a search string. How can you achieve this?

2285

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