How to Generate Random Numbers in Java between Range - Example Tutorial

In software development and programming world we often needs to generate random numbers, some time random integers in a range e.g. 1 to 100 ...

Difference between Abstract class vs Interface in Java and When to use them

When to use interface and abstract class is one of the most popular object oriented design questions and almost always asked in Java, C# and...

How to Find if Linked List contains Loops or Cycles in Java - Coding Question

Write a Java program to check if a linked list is circular or cyclic,   and how do you find if a linked list contains loop or cycles in Java...

Difference between LEFT and RIGHT OUTER Joins in SQL - MySQL Join example

There are two kinds of OUTER joins in SQL, LEFT OUTER join and RIGHT OUTER join. Main difference between RIGHT OUTER join and LEFT O...

Migrating SQL Query from Oracle to SQL Server 2008 or Sybase

Oracle and Microsoft SQL Server are very different than each other and if you are migrating SQL queries or database, tables from Oracle 11g ...

How to convert List of Integers to int array in Java - Coding Tips

So, you have a List of Integers and you want to convert them into int array? Yes you read it write, not on Integer array but int array . Th...

10 Hibernate Interview Questions and Answers for Java J2EE Programmers

Hibernate Interview Questions are asked on Java J2EE Interviews, mostly for web based enterprise application development role. Success and a...

Java Mistake 3 - Using "==" instead of equals() to compare Objects in Java

In this part of Java programming mistakes, we will take a look on another common pattern, where programmers tend to use "==" oper...

Java Program to Find Sum of Digits in a Number using Recursion - Interview Question

Recently this question to asked was one of my reader, which inspired me to write this tutorial. There was usual check to solve this problem ...

How to Find Runtime of a Process in UNIX and Linux

So you checked your process is running in Linux operating system and it's running find, by using ps command. But now you want to know, ...

Eclipse No Java Virtual Machine was found Windows JRE JDK 64 32 bit Error

One of my reader was installing Eclipse in his Windows 7 x86 machine and emailed me about this error " A java Runtime Environment (JRE)...

What is java.library.path , How to set in Eclipse IDE

java.library.path is a System property, which is used by Java programming language, mostly JVM, to search native libraries, required by pro...

Difference between valueOf and parseInt method in Java

Both valueOf and parseInt methods are used to convert String to Integer in Java, but there are subtle difference between them. If you look...

10 Reasons to Learn Java Programming Language and Why Java is Best

Java is one of the best programming language created ever, and I am not saying this, because I am a passionate Java developer, but Java has ...

What is String args[] in Java main method

What is String args is used for or Why we use String arg[] in main method is a common doubt among Java beginners. First thing newbies expose...

How to Convert InputStream to Byte Array in Java - 2 Examples

Sometimes we need to convert InputStream to byte array in Java, or you can say reading InputStream as byte array, In order to pass output t...

10 Abstract Class and Interface Interview Questions Answers in Java

Abstract class and interface is very popular in any object oriented programming language or Java interview, and there are always one or more...

How to Convert JSON array to String array in Java - GSon example

JSON array is a ordered collection of values, which are enclosed within brackets e.g. [] and separated by comma. In this Java tutorial we w...

Top 10 Puzzles, Riddles, Logical and Lateral Thinking questions asked in Programming Job Interviews

Puzzles, riddles, logical questions, and lateral thinking questions are integral part of any programming job interviews. I missed to include...

How to Check If Number is Even or Odd without using Modulus or Remainder Operator

Write a Java program to find if a number is odd or even is one of the basic programming exercise, and anyone will be happy to see this in ac...