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 4247

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

2 10208

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 7679

What is the difference between Synchronizing mehtod & Synchronizing block?

2 5014

what is check p object in java

TCS,

1 3522

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

5 19118

What Is Pointer?

4 4301

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

3 4209

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

2 4093

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

2 5116

In how many ways we can the thread? in java

3 8335

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

2 4386

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

12 13749

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 4877

what is the replacement method of stop() of thread

IBM, TCS,

8 10096


Post New Core Java Questions

Un-Answered Questions { Core Java }

What is another word for methodology?

496


What is meant by class loader? How many types are there? When will we use them?

478


Explain the different forms of polymorphism?

545


What is a pattern what is an anti pattern?

488


What is finalize method?

555






What is meant by null and void?

503


What is the parse method in java?

545


Is null keyword in java?

504


How does compareto method work?

500


What is a Transient Object?

611


What is square root in java?

575


What does the three dot emoji mean?

557


What is the purpose of the finalize() method?

671


how to create multithreaded program? Explain different ways of using thread? When a thread is created and started, what is its initial state? Or extending thread class or implementing runnable interface. Which is better? : Java thread

571


What is casting in java programming?

562