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

Core Java Interview Questions

Questions Answers Views Company eMail

What is System class and its purpose?

2 10468

What enableEvents() method do?

1 5631

What is the purpose of the finally clause?

3 6780

What is the range of the char type?

3 7148

What is the range of the short datatype?

2 6694

What is the relationship between a method?s throws clause and the exceptions that can be thrown during the method?s execution?

2 5673

Relationship between an event-listener interface and an event-adapter class?

1 12590

What is clipping and repainting and what is the relation between them?

1 4596

Explain the relationship between the Canvas and Graphics class?

1 5157

What is the return type of a program?s main() method?

3 10238

What is the smallest package in Java API?

iGate,

5 15239

What is the superclass of exception?

3 9309

What is the use of TL?

1939

What is the use of an interface?

3 6873

What is parameter tag and what is its use?

1 6174

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Un-Answered Questions { Core Java }

What is "this" keyword in java? Explain

1064

Difference between abstract and concrete class ?

1102

Can we write multiple catch blocks under single try block?

1053

Can we use different return types for methods when overridden?

959

What is the use of optional ?

995

What is the escape character in java?

941

Can you explain inner class.

1028

What is difference between pointer and reference?

1011

What is the difference between length and length () in java?

898

describe synchronization in respect to multithreading? : Java thread

888

What is difference between adapter class and listener?

984

What is the program development process?

940

How do you reverse sort a list in java?

903

What is a nullable field?

1000

Explain an algorithm to find depth of a binary tree.

1007

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