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,

2121

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

Axcend,

1 3941

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

Axcend,

1 3868

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

CTS, TCS,

6 11190

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

2 9277

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

Cognizant,

2 7955

why java does not have operator overloading?

2 5842

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

3 5710

What is diffrance between FINALIZE() & FINALLY ?

Infosys,

2 5239

how we can write the string concatenation program in java.

3 6915

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

4 6287

is set interface synchronized by default???

Manhattan,

2 7857

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 4953

who can i handle multiple client in RMI

1898

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

2 4988

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Un-Answered Questions { Core Java }

What is the purpose of nested class in java?

1086

How can constructor chaining be done by using the super keyword?

1094

What is the difference between declaration and definition in java?

1077

what state does a thread enter when it terminates its processing? : Java thread

1049

How to make a write-only class in java?

1060

Can a class be private in java?

993

How many wrapper classes are there in java?

1012

What are meta-annotations?

993

What is the difference between private & public & friendly classes?

1066

What is a variable simple definition?

1020

What is stack example?

1029

What are static variables and functions?

1152

How to access arraylist elements in java?

995

How are java objects passed to a method and what are native methods?

1082

What is java reflection?

985

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