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 63467

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 9915

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

Wipro,

7 10630

What is an abstract class?

DBS, Wipro,

7 9350

How can final class be used?

Accenture, Wipro,

5 11215

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

Wipro,

1 12015

Java support what type of parameter passing ?

Wipro,

7 13861

Explain the term serialization?

Wipro,

10 11826

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

Infosys, Wipro,

10 13442

What is Overriding and how can it be used?

Consagous, Wipro,

7 15426

How is serialization used generally ?

3 5784

How are Swing and AWT be differentiated?

Wipro,

3 6875

Explain pass by reference and pass by value?

IBM, Wipro,

8 13976

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 9282

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 42784

Un-Answered Questions { Java Related }

What is the right data type to represent a price in java?

148

What are the 3 types of loops in java?

127

What are assertions in java?

185

What are the layers in spring framework?

Explain about oops concepts.

216

Which is better hibernate or jdbc?

How does spring jms listener work?

115

Why prepared statements are faster?

152

What is the disadvantage of synchronization?

145

Is arraylist an object in java?

104

What are the different types of auctions in wcs?

146

What are ejbs used for?

122

Why do we need singleton class?

125

Difference between serialization and deserialization in java?

168

What is java command?

125

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