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 purpose of setAutoCommit() ?

Google,

1 6264

What is the difference between JDBC 1.0 and JDBC 2.0?

Corent Technology,

3189

What is the difference between Resultset and Rowset.

IBM, Wipro,

6 36568

Why is prepared Statement, Callable Statement used for? What is the need of Batch updates?

Logica CMG,

1 13789

What is the USE of Null interfaces ??...if thers nothing inside these interfaces how are they used and WHy are they used ???? No 1 has given a proper description yet

1 4309

what is jdk1.5 features?

AMS, Virtusa,

6 23051

v-model life cycle

Virtusa,

2047

if u open login & logout ,how can udisplay the timelogin & logout members ?

Virtusa,

2285

what is multithreading?

Virtusa,

5 10344

what is abstract method with example?

Infosys, Virtusa,

6 17013

how to print output with out using sop statements

UHG,

5 10538

what is auto boxing

UHG,

3 12278

real time example for deadlock,starvation,livelock

5 20754

whatis Home interface and Remoteinterface? with example?

Saksoft,

2009

what is business delegate?

TCS,

2 6568

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Un-Answered Questions { Core Java }

Class c implements interface I containing method m1 and m2 declarations. Class c has provided implementation for method m2. Can I create an object of class c?

1618

What is method overloading in JAVA? Why is it not present in C ?

1103

Differences between C and Java?

1207

Explain the use of javap tool.

1140

What is main difference between variable and constant?

1038

how to deploy apache tomcat server to weblogic server in java

2098

What is data and its types?

1005

What is arraylist e?

1087

Describe the process as to how substring() methodology mechanisms in java.

1130

What does s mean in regex?

1019

How we can generate random numbers in java?

1134

What is mnemonic in assembly language?

1074

Can we use a default constructor of a class even if an explicit constructor is defined?

1106

What is command line argument

1195

What invokes a thread's run() method in java programming?

1195

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