Java Tutorials

Java 8 Base64 Encoding and Decoding Example

In this guide, we’ll explore the Java 8 Base64 utility class for obtaining encoders and decoders for the Base64 encoding […] Continue reading »

Java- Find all possible Palindrome in given String

In this short article, we’ll show you how to find all possible Palindrome in given String using Java. Let us […] Continue reading »

Java Program for Tower of Hanoi Problem

In this article, we are going to solve the Tower of Hanoi problem using Java program. There are two approaches […] Continue reading »

How to sort Map by Key or Value in Java 8

A Map can also be sorted with stream.sorted() method in Java 8. We can sort the Map based on its […] Continue reading »

Java 8 – How to sort Set with stream.sorted()

In this quick tutorial, we’ll learn how to sort Set in Java 8. stream.sorted() is a predefined method of Stream […] Continue reading »

How to sort list in Java 8

In Java 8, the elements of a list are sorted by calling stream.sorted() method of Stream interface. As we know, […] Continue reading »

Java- Find the index of the two numbers in the array whose sum is equal to a given number

Sometimes interviewer wants to check the candidate’s logical ability and the approach taken to solve the challenge/problem using Java. Question:  […] Continue reading »

Java 8 Stream- Sum of List of Integers

Java 8 Stream interface provides mapToInt() method to convert a stream integers into a IntStream object and upon calling sum() method […] Continue reading »

How to iterate Enum in Java

This guide walks you through how to iterate Enum in Java/Java 8. .values() method of an enum class return an […] Continue reading »

Stack implementation in Java using Array

This page will walk through custom Stack implementation in Java using Array. The Stack is a linear data structure which […] Continue reading »

Best practices to avoid NullPointerException in Java

In this tutorial, we will discuss the best practices to avoid or handle NullPointerException in Java. NullPointerException generally threw when […] Continue reading »

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