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

Advanced Java Interview Questions

Questions Answers Views Company eMail

What are the design considerations while making a choice between using interface and abstract class?

1134

What is permgen or permanent generation?

1075

Difference between loadclass and class.forname?

1093

Are enterprise beans allowed to use thread.sleep()?

1196

What is clustering? What are the different algorithms used for clustering?

1122

What is the diffrence between a local-tx-datasource and a xa-datasource?

1101

Is there a guarantee of uniqueness for entity beans?

1057

What is re-entrant. Is session beans reentrant. Is entity beans reentrant?

1097

What do you need to set-up a cluster with jboss?

1117

What are the call back methods in entity bean?

1110

What is jboss?

1079

What is chat area? Explain.

1063

Is it possible to stop the execution of a method before completion in a sessionbean?

1145

What is the difference between the ‘font’ and ‘fontmetrics’ class?

1206

What is the diffrence between a local-tx-datasource and a xa-datasource? Can you use transactions in both?

1081

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Un-Answered Questions { Advanced Java }

Is there a guarantee of uniqueness for entity beans?

1057

How would you create a button with rounded edges?

1237

What is ioc concept?

1260

Can I import same package/class twice? Will the jvm load the package twice at runtime?

1189

Which characters may be used as the second character of an identifier, but not as the first character of an identifier?

1100

Can I run seam with jdk 1.4 and earlier?

1047

How to deploy Jar, War files in J2EE?

2732

Can you control when passivation occurs?

1117

what is a portable component?

2066

Explain about RMI Architecture?

1128

Why are my checkboxes not being set from on to off?

1179

What is the difference between long.class and long.type?

1173

What is a class loader?

2056

What are the different approaches to represent an inheritance hierarchy?

1113

What restrictions are placed on the location of a package statement within a source code file?

1149

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