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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 72593

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 12869

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

Wipro,

7 13629

What is an abstract class?

DBS, Wipro,

7 12162

How can final class be used?

Accenture, Wipro,

5 13224

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

Wipro,

1 13125

Java support what type of parameter passing ?

Wipro,

7 16535

Explain the term serialization?

Wipro,

10 14814

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

Infosys, Wipro,

10 16782

What is Overriding and how can it be used?

Consagous, Wipro,

7 17843

How is serialization used generally ?

 3 7309

How are Swing and AWT be differentiated?

Wipro,

3 8208

Explain pass by reference and pass by value?

IBM, Wipro,

8 16849

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 11254

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 52629

Un-Answered Questions { Java J2EE }

How do you create a first line indent?

426

What is jaxr provider?

428

What is singleton math?

477

What is spring boot dto? : Spring Boot

105

in which perspective we deploy the flow?

421




explain multi-threading in java?

424

What are the different types of interfaces present in hibernate?

105

What is jms in spring?

387

Why is j2ee needed?

396

What are the various editors used in spring work?

279

What is mockito junit?

95

What are the differences between the constructors and methods?

474

How properties of a form are validated in Struts?

484

What is a map in java?

456

What is lazy initialization in hibernate?

142

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