Java Resources

How to Consume REST Web Service (GET/POST) in Java 11 or Above

Learn how to use the standard HTTPClient class as part of java.net.http and to create RestClient, send HTTP GET and POST requests, and handle the JSON response.

January 11, 2022

by Suyash Joshi

· 11,618 Views · 5 Likes

Domain Model Design Pattern in Java - An Introduction and Examples

This post includes a video so that you can take a closer look at Domain Model Design Pattern in Java. Watch to find out more!

January 10, 2022

by Ram N

· 3,153 Views · 4 Likes

How To Detect and Secure Your Java App From Log4j Vulnerabilities

A large number of organizations were affected by the recent security breach involving Log4j. Learn here how to ensure your applications are safe and secure.

January 10, 2022

by Suyash Joshi

· 5,698 Views · 8 Likes

What Log4j Vulnerability Means for SREs

A summary of the Log4j vulnerability and key takeaways for SREs to help with security implications and planning for events that may disable critical systems.

January 10, 2022

by Weihan Li

· 4,413 Views · 4 Likes

A Tentative Comparison of Fault Tolerance Libraries on the JVM

From a number of libraries implementing fault tolerance features on the JVM, this post will look at Microprofile Fault Tolerance, Failsafe, and Resilience4J.

January 10, 2022

by Nicolas Fränkel

CORE

· 3,084 Views · 5 Likes

Using GraphQL Java With Spring

This blog post will cover how to use GraphQL Java within a Spring application that exposes an endpoint for clients to send queries to.

January 10, 2022

by Dan Newton

· 5,000 Views · 6 Likes

Java 17 for the Impatient

Learn the basics of Java 17.

January 8, 2022

by Abhishek Giri

· 13,931 Views · 6 Likes

The Quickest Way to Create an Android QR Code Scanner

Learn the quickest way to create an Android QR code scanner. See a step-by-step implementation camera preview, as well as how to integrate QR code scanning SDK.

January 8, 2022

by Xiao Ling

· 4,624 Views · 2 Likes

Business Delegate Design Pattern in Java

Here, explore the Business Delegate Design Pattern in Java. This video tutorial includes an introduction, real-time example, implementation, and key points.

January 8, 2022

by Ram N

· 4,204 Views · 4 Likes

Protect Your Invariants!

This tutorial shows you how to handle constraints and validation inside your application. Read below to find out how this way can help you!

January 7, 2022

by Oresztesz Margaritisz

CORE

· 6,724 Views · 38 Likes

Composite Design Pattern in Java

Here, take a closer look at the Composite Design Pattern in Java. This video tutorial includes an introduction, class diagram, example, and key points.

January 6, 2022

by Ram N

· 4,603 Views · 5 Likes

JDBC Tutorial Part 1: Connecting to a Database

In this series, learn the basics of Java Database Connectivity. In Part 1, learn what a JDBC driver is and how to open and safely close database connections.

Updated January 6, 2022

by Alejandro Duarte

CORE

· 35,943 Views · 8 Likes

Debugging RAM - Part 1: Java Garbage Collection - Java Heap Deep Dive

Java memory usage is a complex beast, in this first installment, I discuss the available GCs in modern Java and how we can benchmark/tune them.

January 5, 2022

by Shai Almog

CORE

· 6,925 Views · 4 Likes

How We Handled the Log4j Security Vulnerability

Learn how we used Lattix Architect to find instances of log4j in their codebase and estimate how long it would take them to patch and test it.

January 5, 2022

by Sean Barow

· 4,255 Views · 3 Likes

Lazy Load Design Pattern in Java: An Introduction and Implementation

Watch the video in the article below on lazy load design patterns in Java including an introduction and how to implement it for yourself.

January 4, 2022

by Ram N

· 3,816 Views · 5 Likes

NullPointerException in Java: Causes and Ways to Avoid It

This article explains what NullPointerException is with its common causes and best practices you can do to avoid NPE. Read on to find out more!

Updated January 4, 2022

by Dmitry Egorov

CORE

· 24,435 Views · 18 Likes

Distributing a Java Command-Line Application

In this article, I'll show you how to package and distribute a java command-line application and the challenges one has to face to implement it.

January 4, 2022

by Loïc Rouchon

· 10,217 Views · 7 Likes

Filter or Criteria Design Pattern in Java: An Introduction, Example, and Key points

In the video below, we take a closer look at Filter or Criteria Design Pattern in Java with an introduction, example, and key points.

January 4, 2022

by Ram N

· 4,262 Views · 4 Likes

Log4J Does What?

Today, we'll see an example of how this vulnerability actually works. We'll cover Log4J library usage and see how basic inputs can cause potentially disastrous outcomes.

Updated January 3, 2022

by Barak Merimovich

· 18,460 Views · 26 Likes

Context Object Design Pattern in Java: Introduction and Key Points

This video tutorial introduces the concept of Java context object design pattern, including supplemental demonstrations and explanations.

January 3, 2022

by Ram N

· 4,756 Views · 4 Likes

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