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

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Java Related Interview Questions

Questions Answers Views Company eMail

What do you understand by numeric promotion?

1034

Explain the encapsulation principle.

932

How can one prove that the array is not null but empty?

949

Does jvm maintain a cache by itself? Does the jvm allocate objects in heap? Is this the os heap or the heap maintained by the jvm? Why

915

Can an application have multiple classes having main method?

953

In system.out.println(), what is system, out and println?

1027

Can I have multiple main methods in the same class?

917

How can I swap two variables without using a third variable?

994

Is jvm a compiler or an interpreter?

1061

What is data encapsulation?

1006

Why do we only use the main method to start a program?

1060

What is the java api?

933

What is the first argument of the string array in main method?

980

How does java handle integer overflows and underflows?

1058

Are jvm’s platform independent?

923

Un-Answered Questions { Java Related }

What is parsing a string?

1193

Can we overload final method in java?

1005

What can you do with xml access scripts?

908

How listener identify that the event came from a particular object?

2012

What is role of actionservlet?

1047

What are the topics in advance java?

997

Can we have multiple spring configuration files?

441

What is instance means in java?

1073

Can we compare two strings in java?

1035

What are the features of struts 2?

1091

We have some issue with our application server and we tried killing it using kill-9 command, the process disappeared for few seconds but it is back again. We did not start the server but it started. What would be the reason?

998

What are loading utilities?

881

What is the use of runnable interface?

1190

why we use merge option in hybernate pls give a ex snippet

2012

What are the types of relation?

1069

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