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 11513

posted in online test

1 3281

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 4974

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

5 9802

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

2 4526

why java does compile time polymorphism at run time ?

CTS, TCS,

6 15175

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

Quinnox,

2 17685

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

7 8743

why java does not contain pointers?

Infosys, TCS,

13 17372

can we write program without class

TCS,

6 11232

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 8914

what is AWT

3 5679

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 3477

how to accept integer array in java

Tech Guru,

2 4917

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

SAP Labs,

1 6892

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Un-Answered Questions { Core Java }

What is illegal identifier in java?

1011

What is the basic difference between string and stringbuffer object?

1079

What is meant by method overriding?

1107

Can we able to pass objects as an arguments in java?

1020

What is type conversion in java?

1035

What is string data type?

970

What is meant by interface?

1049

How a variable is stored in memory?

986

What is the difference between Grid and Gridbaglayout?

1238

Why singleton is not thread safe?

988

What are the disadvantages of using inner classes?

1174

Can list have duplicates in java?

906

What is concurrent hashmap and its features?

1085

Can we override compareto method?

944

Where are variables stored?

969

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