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 4993

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

2 11100

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 8912

What is the difference between Synchronizing mehtod & Synchronizing block?

2 5989

what is check p object in java

TCS,

1 4247

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

5 20725

What Is Pointer?

4 5555

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

3 5214

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

2 4944

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

2 5992

In how many ways we can the thread? in java

3 9311

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

2 5269

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

12 17103

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 6077

what is the replacement method of stop() of thread

IBM, TCS,

8 12215

Post New Core Java Questions

Un-Answered Questions { Core Java }

How do you add an element to a hashset in java?

952

List the three steps for creating an object for a class?

914

How do you break a loop?

934

Is null function in java?

985

What is byte data type?

955

What is charat java?

911

Can you extend main method in java?

1111

What do you mean by scope of variable?

837

What is memory leak and how does java handle it?

938

Differentiate between a class and an object.

996

How do I compare two strings in word in java?

944

How can you traverse a linked list in java?

1080

Explain parallel processing in java8?

1166

What’s the difference between callable and runnable?

1034

What do you mean by thread safe?

935

For More Un-Answered { Core Java } Questions Click Here