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?

1100

What is permgen or permanent generation?

1028

Difference between loadclass and class.forname?

1055

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

1152

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

1083

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

1058

Is there a guarantee of uniqueness for entity beans?

1014

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

1062

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

1078

What are the call back methods in entity bean?

1072

What is jboss?

1039

What is chat area? Explain.

1025

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

1093

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

1161

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

1035

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Un-Answered Questions { Advanced Java }

Which container method is used to cause a container to be laid out and redisplayed?

1140

What is the relationship between an event-listener interface and an event-adapter class?

1130

To identify IDL language what mapping mechanism is used?

3946

What is the difference between RMI registry and OS Agent?

1149

Difference between new operator and class.forname().newinstance()?

1137

Which containers use a border layout as their default layout?

1144

Brief description about local interfaces?

1275

What is the difference between system.out ,system.err and system.in?

1107

What is the form of storage space in java?

2250

What method is invoked to cause an object to begin executing as a separate thread?

1041

which book is better for jdbc ,servlets and jsp

2106

how do you Handle Front End Application data against DB with example?

1983

What is the difference between java class and bean?

1091

Name the eight primitive java types.

1133

Is jvm a overhead?

1104

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