Java J2EE Interview Questions
Questions Answers Views Company eMail

Can java hashmap have duplicate keys?

484

How is java hashmap implemented?

529

Can you have two constructors in java?

479

How do you declare an array in java?

497

Is java map thread safe?

472

Is array dynamic in java?

459

Does java set allow duplicates?

496

Can we increase array size dynamically in java?

484

How to store image in arraylist in java?

489

How do you delete a list in java?

512

Can we declare an array without size in java?

498

Does java map allow duplicates?

475

Can java arraylist hold different types?

468

Is arraylist sorted in java?

509

How do you remove duplicates in java?

499


Un-Answered Questions { Java J2EE }

enlist some features of jdk.

540


What is generationtype identity?

150


Explain the war file?

589


What is Servlets and explain the advantages of Servlet life cycle?

559


Explain about web sphere commerce?

511






Explain the types of deployment modes and diffrernces between them?

501


How to get servletcontext and servletconfig object in a spring bean?

188


What does it mean to be immutable?

525


What are the topics in advance java?

491


What is difference between throw and throws ?

574


What is autowired in spring boot? : Spring Boot

259


What is orphan removal in hibernate?

148


Write a program to print the pattern given below

475


What is an advice? What are the different types of advices?

158


Can we extend a class with private constructor?

503