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 is java instanceof operator?

1061

Can we declare a constructor as final?

1343

Can you declare the main method as final?

1034

What are filterstreams?

1094

Can you write a java class that could be used both as an applet as well as an application?

974

What is the platform?

1017

Write a regular expression to validate a password. A password must start with an alphabet and followed by alphanumeric characters; its length must be in between 8 to 20.

1056

How to perform merge sort in java?

1076

What is a lightweight component?

1040

What are the types of inner classes (non-static nested class) used in java?

1078

How to make a write-only class in java?

1077

How many types of exception can occur in a java program?

1003

What are the differences between this and super keyword?

963

Do I need to import java.lang package any time? Why?

1 1416

Why are the objects immutable in java?

1006

Un-Answered Questions { Java Related }

What are wrapped classes in java programming?

1074

What are the benefits of the struts system?

1209

What are the different ways of implementing thread? Which one is more advantageous?

1011

Why packages are used?

1599

What are the common uses of "this" keyword in java ?

1035

What is the difference between unidirectional and bidirectional hibernate?

438

How would you dynamically allocate memory to an array?

1058

How does concurrency work for message-driven beans? : BEA Weblogic

994

Which types of exceptions are caught at compile time?

1049

What are different ways for servlet authentication?

1126

What is the difference between access specifiers and access modifiers in java? 16

1018

How do I use persistence? : BEA Weblogic

1088

What is struts in java with example?

976

What restrictions are placed on method overriding in java programming?

1023

Write a servlet to upload file on server.

1120

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