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 Hashmap & Hashtable wirh example?

CTS, Saksoft,

5 15000

what r advatages of websphere? & how to deploy?

Saksoft,

2196

how to connect one jsp page to another jsp page????

IIT, Symphony,

6 47774

Same common question what is Map,Set,HashMap,List????

Symphony,

4 7247

how to open and edit XML file in Weblogic???

Symphony,

1973

Difference between String and StringBuffer.

GE, IBM,

3 8553

what is hashmap& hashtable with example?

CTS,

1 5163

what is webservices?

CTS, Ericsson, HCL,

1 7571

what are the new features available in java 1.5 version?

Accenture, Features, Motorola,

3 17301

how many types of cloning?

Mobily,

4 13780

how to compile jsp?

Logica CMG,

4 8347

what is stringtolennizer with example?

Symphony,

2 5413

what is prepare statement? what is calabedtarement?

Symphony,

1 3941

what is difference between excute query ()and execute update ()?

Symphony,

6 18323

where do we use init()

2 6857

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Un-Answered Questions { Core Java }

What is meant by object?

1007

What is square root in java?

1110

What is meant by collection in java?

1076

What do you understand by casting in java language?

1029

Are generics important java?

981

What does pointer mean?

1064

Describe the Big-O Notation.

1048

What are the advantages and disadvantages of reference counting in garbage collection?

1029

What are the 7 types of characters?

1081

Enlist diffrent types of inheritance supported by java?

918

What is array in java?

1004

What is skeleton and stub?

1089

What is java string pool?

1006

What is difference between null and void?

975

Write an algorithm program in java for the following question.. 1) S is a set of integers.X is an integer obtained by sum of two digits in S. Write logic for whether or not the X is from the S. The time of algorithm should not exceed o(n logn).

2147

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