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

Core Java Interview Questions

Questions Answers Views Company eMail

Why ArrayList class is not a synchronized class and why it is not a thread safe class? explain

1 5065

what is actual real time using of oops concepts in projects(Interface,polymorphism.abstraction.........)

2 11216

I have 2 objects inside one object(vector). how can i serialize one of them. I dont want to serialize the second one

ABC, L&T,

3 9073

What is the difference between Synchronizing mehtod & Synchronizing block?

2 6144

what is check p object in java

TCS,

1 4394

what is the need to set path in java? how many ways to set path in java? Explain breif?

5 20973

What Is Pointer?

4 5761

how to print the below in java?thanks in advance.... * * * * * * * *

3 5351

how to print the below in java? * * * * * * * * *

2 5030

difference between String a; and String a=new String();? y do v need to assign memory to the variable?

2 6118

In how many ways we can the thread? in java

3 9464

how to make a un-checked exception as a checked exception one.

2 5407

Why only one Class is public in one file? Explain in details. Thanks in Advance.

12 17601

Hi can u pls tell me what is the use of marker interface. Iknow what is marker interface but what ability will the object get by implementing this.

CGI,

3 6252

what is the replacement method of stop() of thread

IBM, TCS,

8 12517

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Un-Answered Questions { Core Java }

How to change the priority of thread or how to set the priority of thread?

1040

How many JVMs can run on a single machine and what is the Just-In-Time(JIT) compiler?

1060

Write a java program that prints all the values given at command-line.

1014

Can final class have constructor?

929

What are adapter classes?

1052

What is map and hashmap in java?

1067

Does chrome use java?

975

Is string an object?

1122

How do I get a substring?

981

Is 0 a real number?

1043

What is the generic function?

989

What does || || mean in math?

941

Is string thread safe in java?

1095

What is time complexity algorithm?

1055

What are nested classes in java?

1121

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