Java 8 – Optional class in detail
In this article, we will discuss Optional class in detail and understand why it is needed/introduced in Java 1.8 version and how to avoid/handle (or Read More
Month: July 2023
Java 8 – How to Reverse a String in place ?
In this article, we will see how to reverse a String in place using traditional & Java 8 Stream approaches 1. Traditional approach : ReverseStringInPlace.java Read More
Java 8 – How to find common & uncommon elements from 2 Lists ?
In this article, we will discuss how to find and print common & uncommon elements from 2 Lists (or ArrayList) There are different ways to Read More
Java 8 – How to sort HashMap by its Values first and then by its Keys ?
In this article, we will discuss how to sort a HashMap by its Values first and then by its Keys 1. Sorting HashMap by Value Read More
Java Interview – How to create Thread-safe Singleton class ?
In this article, we will discuss how to write Java code to create Thread-safe Singleton class in a Multi-threaded environment Before starting to write code Read More
Java 8 – Find duplicate count from Integer arrays ?
In this article, we will discuss how to find the desired result from the Integer[] arrays for the problem statement given below 1. Problem statement Read More
Java 8 – Find employee count in each department ?
In this article, we will discuss how to find employee count in every department using Java 8 Stream API Find employee count in each department Read More