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Java J2EE Interview Questions
Questions Answers Views Company eMail

What is garbage collection in Java, and how can it be used ?

Accenture, HCL, Infosys, Sara, SITS, TCS, Wipro,

32 95800

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 28665

Differentiate constructor and a method and how are it be used?

Wipro,

7 29311

What is an abstract class?

DBS, Wipro,

8 27722

How can final class be used?

Accenture, Wipro,

5 27462

By what default value is an object reference declared as an instance variable?

Wipro,

1 26548

Java support what type of parameter passing ?

Wipro,

7 20175

Explain the term serialization?

Wipro,

10 31373

Is there is any error if you have multiple main methods in the same class?

Infosys, Wipro,

10 33538

What is Overriding and how can it be used?

Consagous, Wipro,

7 33257

How is serialization used generally ?

 3 21354

How are Swing and AWT be differentiated?

Wipro,

3 22369

Explain pass by reference and pass by value?

IBM, Wipro,

8 32498

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 25455

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 74375

Un-Answered Questions { Java J2EE }

What is true about beanpostprocessor?

423

what is mutual exclusion? How can you take care of mutual exclusion using java threads? : Java thread

1118

What is Session reduplication and how its done?

2035

Why is java more secure?

929

What do you mean by batch processing in jdbc?

1009

List primitive java types?

1032

What is annotating a text?

448

Where we write javascript code in html page?

1054

What is the latest spring version?

474

Mention the types of loc (dependency injection)?

565

What is the difference between an orm and an odm?

390

Which configuration files are used in struts?

962

What is the Cast Iron Cloud?

914

Is {a, n, d} a palindrome? If you are given a random string, is it a palindrome or not?

1130

Explain transaction and various methods to manage it?

966

For More Un-Answered { Java J2EE } Questions Click Here