Javarevisited

Hello guys, if you are looking for an answer of popular Java interview question, how HashMap works in Java? or How HashMap works internally ...

I have read many articles on Garbage Collection in Java, some of them are too complex to understand and some of them don’t contain enough i...

Hello guys, I have been sharing a lot of roadmaps to become a Web developer , DevOps engineer , and recently React.js developer . One of th...

What is Enum in Java Enum in Java is a keyword, a feature that is used to represent a fixed number of well-known values in Java, For exam...

Java has very good networking support, allows you to write client-server applications by using TCP Sockets. In this tutorial, we will learn...

Write a Java program to find the first non-repeated character in a String is a common question on coding tests. Since String is a popular...

Error: Could not find or load main class HelloWorld comes when you are trying to run your Java program using java command with the main cl...

I know how frustrating is to see "Exception in thread "main" java.lang.NoClassDefFoundError" while running your Java ...

Time is changing and so is Java interviews. Gone are the days, when knowing the difference between String and StringBuffer can help you to g...

The string is Immutable in Java because String objects are cached in the String pool. Since cached String literals are shared between multi...