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

Core Java Interview Questions

Questions Answers Views Company eMail

write a program to create an vector with string(add,remove) operation.and value should be enter through keyboard.

Axcend,

2174

write a program to create an arraylist and listeterator.and value should be enter through keyboard.

Axcend,

1 4022

write a program to create an vector and listeterator.and value should be enter through keyboard.

Axcend,

1 3958

What will happen if we write code like: try{}catch(exception e)catch(IOException i)

CTS, TCS,

6 11392

How could Java classes direct program messages to the system console, but error messages, say to a file?

2 9378

Is Java Class Threadsafe ????? How to make Java class Thread safe??

Cognizant,

2 8049

why java does not have operator overloading?

2 5940

difference between java ,c#&java,c++

3 5834

What is diffrance between FINALIZE() & FINALLY ?

Infosys,

2 5359

how we can write the string concatenation program in java.

3 7025

give me the answer of this code class A extnds String This code we can write r not in Java? Explain?

4 6472

is set interface synchronized by default???

Manhattan,

2 7978

1.IN CASE OF DYNAMIC METHOD DISPATCH WHY WE USE REFERENCE VARIABLE,WE CAN USE THE DIFFERENT DEFINED OBJECT DIRECTLY TO ACCESS THE DATA MEMBER AND MEMBER FUNCTION OF THAT RESPECTIVE CLASS?WHAT IS THE MAIN FUNCTION OF "REFERENCE VARIABLE" HERE?

TCS,

2 5067

who can i handle multiple client in RMI

1926

what is difference betwenn Access Specifier and Access Modifier ????

2 5079

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Un-Answered Questions { Core Java }

What is the difference between array and array list in java?

1302

What is an 8 bit word?

1098

Why are the objects immutable in java?

1053

How do you avoid global variables?

1142

can used Protected Class outside Function.?

1157

What is a double vs float?

1071

What is integer size in java?

1094

What is a nonetype?

1175

Why are arrays useful in java?

1077

What is the difference between iterator and enumeration ?

1042

Which java ide is used the most?

1051

There are two classes named classa and classb. Both classes are in the same package. Can a private member of classa can be accessed by an object of classb?

1546

What is t in generics in java?

1134

What does .equals do in java?

1171

Can we convert list to set in java?

1050

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