The static keyword is one of the essential keyword in Java which represent the concept of static in programming. When you make something st...

Both abstract class and abstract methods are very important concepts in core Java and every Java developer should have good understanding of...

In the last couple of years, I have seen a trend of many Java developers wants to learn more and more about JVM internals and how Java Virt...

Every Programmer loves free eBook and free courses, even more, if it comes from renowned technical book publishers like Oreilly and Manning...

Hello guys, if you want to learn Java from scratch and looking for the best Java books then you have come to the right place. Earlier, I hav...

You can use the set() method of java.util.ArrayList class to replace an existing element of ArrayList in Java. The set(int index, E eleme...

The byte and char are two numeric data types in Java and both can represent integral numbers in a range but there are very different fro...

ArrayList vs HashSet Java The main difference between ArrayList and HashSet is that one is a List implementation while the other is ...

Session tracking or Session management is an important feature of modern web applications which allows the server to remember its clients. ...

Creating Enum from String You can create Enum from String by using Enum.valueOf() method. valueOf() is a static method that is added ...

One of the key differences between a static and a non-static method is that the static method belongs to a class while the non-static metho...

One of the common programming exercises on various Java courses is the addition and multiplication of two arrays. How do you add two intege...

Prior to Java 7, reading a text file into an ArrayList involves a lot of boilerplate coding, as you need to read the file line by line and...

Servlet in JEE platform provides two methods forward() and sendRedirect() to route an HTTP request to another Servlet for processing. Tho...

This error comes when you call to  include() or forward() method after calling the  getOutputStream() from ServletResponse object and w...

Even though Java is considered one of the best feature-rich programming languages, until Java 7, It didn't have any method to copy a fi...

There was no easy way to read a text file as String in Java until JDK 7 , which released NIO 2. This API now provides a couple of utility m...

Enum to String Conversion Example in Java There are two ways to convert an Enum to String in Java, first by using the  name() method of...

It is possible to increase the heap size allocated by the JVM by using command-line options Here we have 3 options -Xms<size>     ...

This error comes when a Servlet calls the getOutputStream() method on the response object for writing something after calling the include(...