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

Core Java Interview Questions

Questions Answers Views Company eMail

abstract class Demo { public void show() { System.out.println("Hello I am In show method of Abstract class"); } } class Sample extends Demo { public void show() { super.show(); System.out.println("Hello I am In Sample "); } } public class Test { public static void main(String[] args) { //I WANT TO CALL THE METHOD OF BASE CLASS IT IS POSSIBLE OR NOT CAN WE USE SCOPE RESOLUTION OPERATOR TO CALL OR JAVA NOT SUPPORTED THAT :: OPERATORE } }

3 14018

java is puerly object oriented or not ?

5 6845

i need income tax program using java inheritance concept. could u please help me?

2 5012

difference between byte stream class and character stream class?

4560

why should we get the following error ? Exception in main method NoClassDefFoundError:classname could anyone give the detail clarification on how java compiler can look for .class file?

2 4026

i need source code for income tax program using java inheritance

1 5046

What are the notations in Java?

Cap Gemini,

1 8854

What are library required to connect to excel sheet.

Cap Gemini,

2 6212

What is “try and catch” in java

Cap Gemini, TCS,

5 8606

Scenario: There are 1 to 100 numbers. Each number should be keep in the each column like from A column to Z column ie 1 to 26. From 27 to 52 should be in 2nd row in the excel sheet. This has to be continue till 100. How do you write Java program and what are various methods.

Cap Gemini,

4 8025

public class Base { public void myMethod(int a,intb) {} } // Uses myMethod and then hides it. public class DerivedOne extends Base { private void myMethod(int a,int b); } will this compile or not .yes or no. why

2 4520

how to crate clint-server socket?

Accenture, Infosys, Infotech, TCS,

1 5045

how an we achive multiple inhetitance in java using interface..??

2 4963

how to connect two diffrent applet files

3016

I need help please send me reply: Write a program "if given a string like 'HAT', the combination's returned should be like ATH,THA,TAH in java"?

4 5911

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Un-Answered Questions { Core Java }

How many types of string data types are there?

1098

Realized?

2193

Can constructor be static or final?

1095

What is anti pattern in java?

971

Why java is used everywhere?

1013

Does java list allow null?

997

What is jit compiler ?

981

Where is stringbuffer stored?

988

What is the use of jtable?

1126

What are access specifiers available in java?

1009

What are the different collection views provided by maps?

992

What is the purpose of format function?

1182

How can we use primitive data types as objects?

961

Can an interface extend a class?

996

Can you inherit a constructor java?

1091

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