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

Core Java Interview Questions

Questions Answers Views Company eMail

system.out.println(1 + 3);

8 11302

posted in online test

1 3208

if am have 100 threads(for ex:T1,T2---T100) how we give priority to these threads and how the system excute these threads

2 4889

What is the multilevel inheritance. and also give the Example of it ?

5 9610

Can Anybody tell the diff b/w jdk1.6 and latest version.

2 4437

why java does compile time polymorphism at run time ?

CTS, TCS,

6 14995

what is the use of clone() in real time scenario?

Quinnox,

2 17577

what is the use of thread?Justify it by project point of view

7 8550

why java does not contain pointers?

Infosys, TCS,

13 16957

can we write program without class

TCS,

6 11033

I want to run a simple hello world java (HelloWorld.java) program using a batch file. How can i run it and how to construct a batch file.

Infosys,

1 8847

what is AWT

3 5540

What happens when a class is made static like if a field or member is made static it becomes class variable and is shared by all the object of the class?

1 3401

how to accept integer array in java

Tech Guru,

2 4843

how to print hello world every second till i have pressed enter key ???

SAP Labs,

1 6821

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Un-Answered Questions { Core Java }

What are JVM.JRE, J2EE, JNI?

1062

Explain the difference between abstract classes and interfaces in java?

1110

What super () does in java?

874

How to make object serializable in java?

932

What is native method in java?

1026

how to create multithreaded program? Explain different ways of using thread? : Java thread

917

Why unicode is important?

901

What is difference between java and java ee?

971

Explain numeric promotion?

1032

Why convert an applet to an application?

1050

How can we access some class in another class in java?

945

What is singleton pattern?

1051

What is keyset in java?

1025

What does system out println () do?

976

What is the final keyword?

944

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