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 19502

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 22683

How can we find size of the object ?

CTS, RazorSight,

5 15000

Howmany classes that package java.applet.* contains?

TCS,

1 7306

How to reduce flicking in animation?

TCS,

3 7289

How to print nodes of a Binary tree?

TCS,

1 6501

What is I/O Filter?

TCS, WAX,

2 14146

How to initialize an Applet ?

TCS,

9 25143

Can you call a private data from an inner class?

6 10108

Can multiple catch statements be used in exceptions ?

Wipro,

6 12232

Difference between Application and Applet ?

Wipro,

4 11242

Can a class inherit the constructors of its superclass?

iFlex, Wipro,

9 23102

What is 3-tier model?

Wipro,

3 8464

For which statements we use a label?

Wipro,

3 6964

How to eliminate duplicates from an array?

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

6 24173

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Un-Answered Questions { Core Java }

What does s mean in regex?

1012

What are thread safe functions?

946

What are the topics in advance java?

964

what happens when a thread cannot acquire a lock on an object? : Java thread

1049

How to compare two strings in java program?

1047

Can two objects have same hashcode?

995

Explain polymorphism citing an example.

1040

What is a JAR file?

1042

What is string value?

1156

What is the difference between length and length () in java?

938

What are the steps in the jdbc connection?

1014

What is javac in java?

1000

What language is an assembler written in?

989

What is the use of conditional statement?

976

Explain java coding standards for variables ?

1166

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