What is a Leap Year? Leap year is a year, occurring once every four years, that has 366 days including February 29 as an intercalary day. Is the year divisible by 4? If no - it's not a leap …
java basics Archives...
In Java How to Read a File and Convert File to String? (5 different ways)
What is simplest way to read a file into String? Do you want to read a plain text file in Java? How do you want to convert a File object to a String object? There are multiple ways we can read a file …
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In Java How to add New line in String?
In this tutorial we will go over two different ways to add new line to any String object. Let's get started: Create class CrunchifyAddNewLineToString.javaCopy below code and save …
In Java How to Escape HTML content? Simple Tutorial using Apache Commons Library
Sometime it's absolutely necessary to escape HTML content before you proceed over to Database operations or sending it as a POST call payload. Sometime back I've written a tutorial on Escape …
In Java how to Initialize HashMap? 7 different ways
In Java How to initialize HashMap? How to directly initialize a HashMap (in a literal way). There are 7 different ways you can initialize HashMap in Java. Method-1: Simple Mutable map: It's …
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tinylog – Lightweight, Simplified logging framework for Java. HelloWorld tutorial and Logging Level details
What is tinylog? Tinylog is a lightweight and Simplified logging framework for so many JVM languages. It has static logger. No need to create any other logger instance per class. Like any …
What is ConcurrentModification Exception in a multi-threaded environment?
Are you getting ConcurrentModification Exception in Java? How to fix it? Mainly this happens when you try to remove element from ArrayList while iterating through it. We usually get this exception …
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IntelliJ IDEA Project/Module and latest Java setup (Java 17 or newer)
Java development team has changed their release cycle after Java8 significantly and now they are releasing new version every few months. I personally like the faster Java release cycle and love …
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How to check if a file exists or not in Java? File.exists() and File.isFile() methods in Java
How to check if file exists in on file system? Sometime at runtime, you may have to find a file and make sure that exists before executing or running any command. You don't want to get an …