What is an advantage of using the jdbc connection pool?

878

How do you implement singleton class?

984

Explain polymorphism citing an example.

1042

What is a 4 tier architecture?

461

What is ioc or dependency injection?

428

If a java process keeps going down due to an out of memory error, what all java options would you start with that would tell you what was in memory at the time of the out of memory error?

1057

Explain about the select method with an example?

1180

Give example to differentiate between call by value and call by reference.

1060

What is Mutex (Mutual Exclusion Object) ?

1152

Differentiate between vector and array list.

1066

What are the configuration files in hibernate?

431

Is it possible to send or receive a message from within a message listener? : BEA Weblogic

911

Why did my jdbc code throw a rollback sqlexception?

924

How are the elements of a gridbaglayout organized?

1063

What is autoproxying?

477