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 the ResourceBundle?

Elementus Technologies,

2 6825

Hey buddy.. can you please tell me about the use of marker interface? And is there any link between marker interface and factory methods? Thanks in advance.

2 6433

Hi, well i am unable to understand that why it is mandatory to have same hashcode, if two objects are same? Thanks in advance.

5 7258

Hi buddy, well i got that there is always a default constructor with abstract class. OK. But why not with interface? Thanks in advance.

2 5171

hi to all. well can you please tell me that why String class is immutable? Thanks in advance.

Huawei,

5 9814

1).Is Object class abstract or not? 2).Is main method(public static void main(String args[])low priority thread or high priority thread?

TCS,

3 10308

1).what is the difference between below examples String s="vijay"; String s=new String("vijay");

Mascon, Satyam, TCS,

12 19513

what are the different access specifiers that can be used by interfaces and abstract classes? can anyone give me detailed description on this

IBM, L&T,

11 25029

How will you create the class for the following scenario? Employees under one employee?

Bally Technologies,

2 6600

Can we override static methods?

Bally Technologies,

18 30775

Difference between flush() and commit() in hibernate?

Bally Technologies,

2 22307

what is generics in jdk1.5?

Bally Technologies,

2 10279

Write the code for Palindrome ?

Bally Technologies,

2 6423

Linked List reverese program

Bally Technologies,

2 6345

Is ResultSet class?

Bally Technologies, TCS,

5 11788

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Un-Answered Questions { Core Java }

Name the components that are termed to be Heavy-weight component but available in Light-weight components?

2491

What are the types of literals?

1188

What is meant by polymorphism?

1026

How can we create a thread in java?

1025

If you do not want your class to be inherited by any other class. What would you do?

1007

How do I get a substring?

978

How does list work in java?

917

What is meant by null and void?

973

what is deadlock? : Java thread

1013

State some situations where exceptions may arise in java?

1060

Why Java is not pure Object Oriented language?

1110

What are daemon Threads in java?

1204

How many bytes is a string?

1135

What is the difference between applet and application?

1014

What is a substring of a string?

1163

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