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 11536

posted in online test

1 3291

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 4983

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

5 9816

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

2 4533

why java does compile time polymorphism at run time ?

CTS, TCS,

6 15203

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

Quinnox,

2 17692

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

7 8779

why java does not contain pointers?

Infosys, TCS,

13 17407

can we write program without class

TCS,

6 11257

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 8922

what is AWT

3 5702

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 3485

how to accept integer array in java

Tech Guru,

2 4930

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

SAP Labs,

1 6899

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Un-Answered Questions { Core Java }

What is difference between null and void?

975

Explain about the interpreter in java?

1057

does java support pointers?

995

What is the difference between double and float variables in java?

1155

What are data types in programming?

992

What steps are taken when the OS shifts from one-thread execution to another?

1367

How listener identify that the event came from a particular object?

1995

Can an interface extend another interface?

1055

Enlist diffrent types of inheritance supported by java?

918

Name container classes in java programming?

1102

What is java command?

1085

Is arraylist an object in java?

1164

Can you access the private method from outside the class?

973

Why is the main method static?

1159

If two threads have same priority which thread will be executed first ?

1482

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