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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 3576

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

2 9484

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 6069

What is the difference between Synchronizing mehtod & Synchronizing block?

2 4298

what is check p object in java

TCS,

1 2876

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

5 17639

What Is Pointer?

4 3276

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

3 3366

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

2 3380

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

2 4438

In how many ways we can the thread? in java

3 7455

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

2 3558

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

12 11303

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 3887

what is the replacement method of stop() of thread

IBM, TCS,

8 8132


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Un-Answered Questions { Core Java }

What is the difference between compare and compareto in java?

132


What is the multi-catch block in java?

174


What is the use of generics? When was it added to the Java development Kit?

172


What is the order of arraylist in java?

145


What is an immutable object? How do you create one in java?

165






Why do we create public static method in java?

189


What is the purpose of extern variable?

140


What is difference between static class and singleton pattern?

142


Difference between collection, collection and collections in java?

184


What is the difference between method and means?

141


Given a singly linked list, find the middle of the list in a single traversal without using temporary variable.

204


What are different types of inner classes ?

166


What are computer functions?

137


Does garbage collection occur in permanent generation space in jvm?

164


Which method cannot be overridden in java?

167