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

Core Java Interview Questions

Questions Answers Views Company eMail

How many statements can be created with one connection in jdbc?

Polaris,

4 12172

What is the importance in context in JDBC connection pools?

iFlex,

2 4854

How to call a Stored Procedure from JDBC?

Satyam,

4 7656

What are the types of statement? explain

SysBiz,

1 8158

In real time project which driver did u use? What is the main functionality of the Prepared Statement?

Photon,

3 7798

What are the parameters used in Connection pooling?

IBM,

1 5648

What are batch updates. in jdbc

Corent Technology,

2 6486

What is thin driver and thick driver. why it is called so?

Logisoft,

2 22790

What is JDBC Driver interface?How can you retrieve data from the ResultSet

CTS,

2156

What is the protocol is used in type4 driver?

CMC,

4 7137

What are the two major components of JDBC?

CMC, Mind Tree,

5 14838

What is stored procedure. How do you create stored procedure ?

GE,

1987

Which of the following is not an isolation level in the JDBC

CTS,

2188

Difference between local and global transaction ?

Accenture, iFlex,

1 22462

What are the steps to do connection pooling in weblogic?

TCS,

1 8150

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Un-Answered Questions { Core Java }

Why does java have different data types for integers and floating-point values?

1070

What is a platform?

1163

Explain when we should make an instance variable private.

1201

Is java util regex pattern thread safe?

1089

What is the difference between preemptive scheduling and time slicing?

1116

Is it possible to override private or static method in java?

1041

What is a flag and how does it work?

1076

What is the difference between a vector & an array list?

1223

Can a class be protected in java?

1017

What is binary tree in java?

1124

What is method in research paper?

1218

What is empty string literal in java?

1111

what is meant by Byte code concept in Java?

1136

Is there any case when finally will not be executed?

1007

Can constructor be inherited?

1092

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