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 11769

posted in online test

1 3375

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 5082

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

5 9972

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

2 4603

why java does compile time polymorphism at run time ?

CTS, TCS,

6 15402

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

Quinnox,

2 17791

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

7 9001

why java does not contain pointers?

Infosys, TCS,

13 17827

can we write program without class

TCS,

6 11471

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 9016

what is AWT

3 5853

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 3580

how to accept integer array in java

Tech Guru,

2 5046

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

SAP Labs,

1 6988

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Un-Answered Questions { Core Java }

Where local and global variables are stored?

1127

What is a flag and how does it work?

1072

A non-static inner class may have object instances that are associated with instances of the class’s outer class. A static inner class does not have any object instances.

1058

What is ternary operator in java?

1122

What is arrays sort in java?

1024

What is an accessor?

1766

What is api in java?

1022

Can we serialize static variables in java?

1146

What are the core java topics?

1107

What is the difference between the ">>" and " >>>" operators in java?

1031

What is difference between hashset and hashmap?

1179

what is the difference between a threads start() and run() methods? : Java thread

1063

What is structure of java heap? What is perm gen space in heap?

1185

What does \ mean in regex?

1320

Which collection is sorted in java?

1084

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