Java : Calculate Leap Year and Number of days in a Year
Below program shows you how to calculate or check if a year is leap year or not and how to check number of days in a year.
Java : How to Compare two Sets and check its Equality efficiently
This tutorial explains the best and efficient way to compare two sets and equality using containsAll() and equals() method of Set interface. let’s look at the example below.
How to add hours to unix timestamp or epochmilli in java?
This tutorial explains how to add hours to unix timestamp or epochmilli using TimeUnit in Java. You may face situations like adding hours, minutes and seconds to an timestamp for display purpose in UI. Let’s see how to do that.
Format LocalDate to String or int with Month and Day in double digit
Let’s say you wanted to format LocalDate like yyyyMMdd with date’s month and day values in double digit to String or int, then follow this tutorial.
Check if Element exists in a Collection using Lambda Expressions
If you wanted to check whether element exists in a collection or not using specific id or name, the better approach is to use anyMatch() method of Stream interface of Lambda Expressions.