Java Related Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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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 94632

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 28315

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

Wipro,

7 29002

What is an abstract class?

DBS, Wipro,

8 27432

How can final class be used?

Accenture, Wipro,

5 27225

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

Wipro,

1 26375

Java support what type of parameter passing ?

Wipro,

7 19859

Explain the term serialization?

Wipro,

10 30914

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

Infosys, Wipro,

10 33050

What is Overriding and how can it be used?

Consagous, Wipro,

7 32927

How is serialization used generally ?

3 21173

How are Swing and AWT be differentiated?

Wipro,

3 22149

Explain pass by reference and pass by value?

IBM, Wipro,

8 32112

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 25218

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 73398

Un-Answered Questions { Java Related }

What is dataaccessexception?

421

What about method local inner classes or local inner classes in java?

1004

What is mnemonic code?

960

How do you add an element to a set in java?

974

Which layout does swing use by default?

937

What is the independent variable in an experiment?

905

What is non primitive data type in java?

868

How can I instantiate and load a new CachedRowSet object from a non-JDBC source?

923

What is @controller annotation in spring?

397

What is the purpose of checked and unchecked exceptions in JAVA?

954

What are the advantages of collection pools?

970

What are session methods in hibernate?

350

is there any difference between weblogic and websphere?

904

What is difference between java singleton and spring singleton?

393

What is the main parts of jms applications?

789

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