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 mechanism does java use for memory management?

991

Why object class is super class for every class in java?

1041

Define an abstract class with reference to java.

1014

What are different exception types exceptions available in java ?

1015

Explain super keyword in java.

1042

What is difference between final and finally in java?

Cyient,

1105

What are meta-annotations?

Cyient,

1003

What is exception in java?

Cyient,

1097

Write a java program to generate fibonacci series ?

Cyient,

1082

What do you understand by overloading and overriding in java?

1094

Write code to implement bubble sort in java?

1006

What is difference between class and object in java?

1089

What is hashing in java?

1052

Write a factorial program using recursion in java?

1035

Write a program to find the greatest of three numbers in java?

1017

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Un-Answered Questions { Core Java }

What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy?

1149

What is the use of flag?

1100

Why webdriver is an interface?

1068

Why set do not allow duplicates in java?

1117

Explain the difference between treeset and treemap in java?

986

What is string in java with example?

1055

What is jar?

1133

What are keywords give examples?

1066

Explain about abstract classes in java?

1046

Where local and global variables are stored?

1098

How we can make copy of a java object?

1111

What is the purpose of the finalize() method?

1263

Program to Find the second largest element in an array.

1207

How destructors are defined in java?

1203

What is the purpose of a transient variable?

1079

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