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Java Related 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 74429

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 13528

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

Wipro,

7 14353

What is an abstract class?

DBS, Wipro,

7 12767

How can final class be used?

Accenture, Wipro,

5 13619

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

Wipro,

1 13391

Java support what type of parameter passing ?

Wipro,

7 17141

Explain the term serialization?

Wipro,

10 15586

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

Infosys, Wipro,

10 17541

What is Overriding and how can it be used?

Consagous, Wipro,

7 18429

How is serialization used generally ?

 3 7731

How are Swing and AWT be differentiated?

Wipro,

3 8540

Explain pass by reference and pass by value?

IBM, Wipro,

8 17448

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 11696

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 54326

Un-Answered Questions { Java Related }

What are the 8 data types in java?

509

What is constructor chaining and how is it achieved in java?

559

What is a swing application?

490

What is hql (hibernate query language)?

194

Name component subclasses that support painting in java programming?

616




What are the components of j2ee?

446

What is difference between word and integer?

581

What is criteria api?

383

What is an immutable object? How do you create one in java?

587

explain the object/relational mapping integration module

223

why Java does not support multiple inheritances?

690

Is a spring bean a singleton?

150

What is many to one mapping in hibernate?

182

What is the purpose of the strictfp keyword?

600

What is java reflection?

524

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