In this lesson, you will learn about the history of Java, types of Java programs, Java Virtual Machine (JVM), Java Standard Library and current Java editions. History Java was developed in 1991 by the Green Team, comprising James Gosling, Mike Sheridan, and Patrick Naughton, as a pilot project for a simple language to program smart…
Read More Introduction to JavaOutput: Brand is: Ford This is a Ford with a number of seats 5 and with colour blue
Read More Java Inheritance: A Beginner’s GuideIn this tutorial, we will explore how to use the Java HttpClient to upload a file to the server. In the next tutorial, we will cover how to configure HttpClient to accept all SSL certificates. Let’s get started! In the code example below, we will use the Apache HttpClient and the MultipartEntityBuilder. HttpClient Maven Dependencies…
Read More Java File Upload using HttpClientConvert char to String in Java using the String.valueOf() method There is a valueOf() static method in the String class that returns the String representation of its argument, which can be a char or any other data type. public class Test { public static void main(String[] args) { char ch = ‘a’; String str =…
Read More Convert Char to String in JavaIn this Java tutorial, I am going to share with you different ways how to generate a random string of characters. You will learn to generate the following types of random Strings of characters: alpha-numeric String of characters of any length or of a specific length, Letters only, Numbers only. I hope you will find…
Read More Random String of Characters in Java. Different Examples.This tutorial guides you through writing type-safe queries in Java using jOOQ (Java Object Oriented Query). You’ll get a quick tour of jOOQ by running an application and seeing how it generates database tables from Java classes. With its smooth API, jOOQ also helps you create type-safe SQL queries. jOOQ vs JPA jOOQ is a…
Read More Type Safe SQL Queries in Java with jOOQIn this tutorial, we will generate a random alpha-numeric string of characters, which can be used as a user password. Password Requirements When generating passwords, it’s important to set requirements that make them strong and difficult to guess. Here are some guidelines to follow when creating password requirements: Length The length of a password is…
Read More Generate Secure Password in JavaIn this blog post, I will share how to copy properties from a DTO object to an Entity object and then back from an Entity object to a DTO object. DTO stands for Data Transfer Object, and it is a simple, Plain Old Java Object that typically contains class properties and getter and setter methods…
Read More DTO to Entity Conversion in JavaJava provides a lot of built-in methods for manipulating strings. These methods make it easy to perform common string operations like concatenation, splitting, and searching. To find more code examples that demonstrate how to work with Strings in Java, check out the following tutorials: Java String Working With Strings in Java – Part 1 Working…
Read More Java String Methods Every Developer Should KnowIntroduction Linked lists are an important data structure used in programming. They are especially useful when the size of the data is unknown and dynamic, or when we want to implement other data structures like stacks and queues. In this tutorial, we’ll focus on singly linked lists (SLL), one of the most commonly used linked…
Read More Singly linked list in JavaIntroduction A Doubly Linked List (DLL) is a data structure in which each node of the list contains a pointer to its previous and next nodes. This allows bidirectional traversal of the list. In this tutorial, we will discuss the representation, advantages, and disadvantages of using a DLL over a singly linked list, operations on…
Read More Doubly Linked List in JavaIn this tutorial, I am going to share with you a few different techniques you can use to iterate over a collection in Java. Iterating ArrayList with Enhanced For-Loop List<String> names = new ArrayList<>(); names.add(“Sergey”); names.add(“Bill”); names.add(“John”); for(String name: names) { System.out.println(name); } Output: Sergey Bill John We declare a List of String objects named…
Read More Iterating over Collections in Java: ExamplesLearning how to convert Java objects into JSON and vice versa can be very helpful for your work as a full-stack mobile app developer. In this blog post, I will share some code examples that will help you with the most common tasks you’ll encounter when working with JSON and Java. I will cover the…
Read More Convert Java into JSON and JSON into Java. All Possible Examples.In the previous lesson, we covered the conversion of a Decimal to Binary. Here, you will learn how to convert Binary to Decimal in Java. There are a couple of ways: Using the parseInt() method With custom logic Convert Binary to Decimal in Java using the parseInt() method We can use the parseInt(String s, int…
Read More Convert Binary to Decimal in JavaAWS Lambda is a service that lets you run code without provisioning or managing servers. In this tutorial, I will share with you how to create a very simple Lambda function in Java and run it on AWS. Prerequisites To be able to follow this tutorial, you will need to have the following: An AWS account,…
Read More A Simple AWS Lambda Function in Java