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

Core Java Interview Questions

Questions Answers Views Company eMail

Difference between Applet & Application?

6 66589

Can a lock be acquired on a class?

3 12477

Can an abstract class be final?

10 63278

Can an anonymous class be declared as implementing an interface and extending a class?

2 6592

Difference between Interface & Abstract class?

5 10122

Difference between String & StringBuffer

IBM, Infosys, Tech Mahindra, Wipro,

16 57552

Does garbage collection guarantee that a program will not run out of memory?

1 5611

Does java support multi dimensional arrays ?

6 14446

what are ER diagrams?

2 6473

Explain Event handling in AWT?

Infosys, TCS,

1 7324

Explain Stream Tokenizer?

4 11205

Explain about Superclass and Subclass?

6 13612

What is lazy activation?

CMC,

2 7286

Howmany address lines are required to addressing 1 MB memory?

Beatroot Technologies, CSC, HCL, Hexaware, IBM,

8 30464

How the elements are organized in GridBagLayout?

1 4020

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Un-Answered Questions { Core Java }

Can java object be locked down for exclusive use by a given thread?

997

What is %02d?

1085

What are the main uses of this keyword?

1065

Explain about arraylist?

1105

What are the advantages and disadvantages of object cloning?

1108

What is immutable in java?

1069

What is variable explain?

1003

what is the difference between process and thread? : Java thread

991

Give an example of call be reference significance.

1032

What are features of java?

1024

What is adapter in java?

925

What is array sorting in java?

1060

What is final modifier?

1057

What is the purpose of the system class in java programming?

1107

What is string in java is it a data type?

1018

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