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

Core Java Interview Questions

Questions Answers Views Company eMail

What is the difference between add() and addElement() method in Vector Class ?

TCS,

2 18550

Can we add two byte variables and assign the result to a byte variable ? b=b1+b2 where b,b1,b2 are byte types

TCS,

4 21217

How can we find size of the object ?

CTS, RazorSight,

5 12845

Howmany classes that package java.applet.* contains?

TCS,

1 6323

How to reduce flicking in animation?

TCS,

3 6026

How to print nodes of a Binary tree?

TCS,

1 5734

What is I/O Filter?

TCS, WAX,

2 13393

How to initialize an Applet ?

TCS,

9 22743

Can you call a private data from an inner class?

6 8636

Can multiple catch statements be used in exceptions ?

Wipro,

6 10447

Difference between Application and Applet ?

Wipro,

4 9951

Can a class inherit the constructors of its superclass?

iFlex, Wipro,

9 20656

What is 3-tier model?

Wipro,

3 7594

For which statements we use a label?

Wipro,

3 6045

How to eliminate duplicates from an array?

ABC, AdMod, Adobe, College School Exams Tests, Patni, Wipro,

6 21844

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Un-Answered Questions { Core Java }

What are the features of java?

639

What is Gang of four design patterns

704

How to print an arraylist in java?

621

Explain the scope or life time of class variables or static variables?

639

What is the use of toarray () in java?

662

How do you do a line break in java?

590

explain autoboxing in java?

690

What type of variable is error flag?

732

What is the difference between array list and vector in java?

611

Explain enumeration in java?

673

Why do we use return statement?

642

What is tochararray in java?

610

Why to use nested classes in java? (Or) what is the purpose of nested class in java?

625

What is the default size of load factor in hashing based collection?

678

What is the difference in between cpp and java? Can u explain in detail?

722

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