What is the default value of the local variables?

967

Why heap memory is called heap?

1002

What do you mean by request dispatcher in servlet?

1079

What is the use of session in hibernate?

304

What is difference between @controller and @restcontroller in spring boot? : Spring Boot

427

How do I check in my code whether a maximum limit of database connections have been reached?

958

Can keyword be used as identifier?

910

What is the difference between a synchronized method and a synchronized block?

1031

what is optional in java 8?

1017

Can you explain struts validator framework?

973

What is an aspect?

409

What is metadata in programming?

953

What do you mean by jdbc batch processing and what are the advantages of using jdbc batch processing?

948

What is the difference between ArrayList and Vector? which one is better in Java

1092

What is ioc?

372