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

Core Java Interview Questions

Questions Answers Views Company eMail

Is it possible to create Userdefined Unchecked Exception also?If Yes, give an example?

ADP,

2 8860

What is JIT ?

Satyam,

4 10047

can we add two numbers without using arthematic operators? if possible how?

CTS,

5 9713

why the equals method can be override?when we override the equals method?

5 11111

why the wait,notify,notifyall methods are placed in object class?these are the thread concepts why these methods are placed in Object class?

Global Logic, Satyam,

2 11558

using equals method overriding which objects are compared?i.e same class objects or other class objects?Explain me.

4 6413

If set accepts only one argument then how can it compare two objects to avoid duplicates

5 7153

can u override the start() method of Thread class

5 20166

which method throws exception of type Throwable

2 5539

can u handle an error if u write Thowable in the catch class lise try { some errorneous code }catch(Throwable e){ ...}

4 8151

how to convert mm/dd/yy to dd/mm/yy using collections in java.

Bosch,

4 12458

how do you store phone numbers using java collections

Bosch, IBAB,

5 18927

which one is performance wise advantageious from List,Set,Map?

6 12229

string is immutable? right every one knows that, my question is it advantage or disadvantage making string immutable?

HCL,

5 10879

What is difference between hash mapping and hash table?

NDS, Wipro,

5 10666

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is the gregoriancalendar class in java programming?

1044

Can a private method of a superclass be declared within a subclass?

1041

What is finalize() function in java?

1016

Write a program to print fibonacci series

1159

What is methodological theory?

996

Write a program in java to establish a connection between client and server?

969

How do you know if a value is nan?

1059

How many bytes are a float?

983

Which class cannot be a subclass in java?

1023

How can we find the sum of two linked lists using stack in java?

1154

Can we use switch statement with strings?

1045

What is binary search in java?

996

Why do we override tostring method in java?

963

What is difference between length and length() method in java ?

997

Are strings immutable in java?

985

For More Un-Answered { Core Java } Questions Click Here