Language Resources

10 Examples of ConcurrentHashMap in Java

Below are some of the frequent operations around Java's ConcurrentHashMap, like how to create a ConcurrentHashMap, how to update a key or value.

Updated October 22, 2020

by Javin Paul

· 17,107 Views · 6 Likes

Using Flyweight Design Pattern In Java

In this article, explore the Flyweight design pattern in Java.

October 22, 2020

by Brijesh Saxena

CORE

· 7,724 Views · 6 Likes

How to Embed a jBPM Process in a Java EE Application

In this article, see a tutorial on how to embed a jBPM process in a Java EE application.

October 22, 2020

by Amit Nijhawan

· 6,652 Views · 2 Likes

Command Design Pattern In Java

Here, we'll discuss the Command Design Pattern — a useful pattern in which we wrap a request in an object known as Command and give it an Invoker to perform.

Updated October 22, 2020

by Brijesh Saxena

CORE

· 7,139 Views · 6 Likes

Connecting Angular to the Spring Boot and Slash GraphQL Recommendations Engine

In this article, I fine-tune the original recommendations engine, add a secondary data source, and write an Angular client to consume the data.

October 22, 2020

by John Vester

CORE

· 84,362 Views · 4 Likes

How to Convert a URL to PNG in Java

Our input will be the URL of the web page we want to capture, any extra loading wait, and the desired size parameters for your output.

October 21, 2020

by Brian O'Neill

CORE

· 4,891 Views · 1 Like

Adaline Explained With Python Example

In this post, you will learn the concepts of Adaline (ADAptive LInear NEuron), a machine learning algorithm, along with a Python example.

October 20, 2020

by Ajitesh Kumar

· 17,777 Views · 3 Likes

Augmented Analytics With PySpark and Sentiment Analysis

Step by step tutorial of how you can leverage sentiment analysis to enrich tweets data with PySpark and get a feel of the overall sentiments towards COVID19.

Updated October 20, 2020

by Adi Polak

· 8,528 Views · 5 Likes

Using Proxy Design Pattern In Java

Today, I will discuss another structural design pattern - Proxy Design Pattern. Proxy means an object functioning as another object.

October 20, 2020

by Brijesh Saxena

CORE

· 11,453 Views · 13 Likes

What's Wrong With Big Objects In Java?

The G1 garbage collector, despite its advantages, is currently not good at handling bigger objects, called Humongous. Learn how to diagnose and fix the problem.

October 20, 2020

by Misha Dmitriev

· 14,634 Views · 15 Likes

Minions in Minikube - A Kubernetes Intro for Java Developers

Java developers, it would be despicable not to take a look at this cute project that will give you a hands-on introduction to Kubernetes.

Updated October 20, 2020

by Ryan Dawson

· 15,332 Views · 20 Likes

Configuring Java Apps With Kubernetes ConfigMaps and Helm

This tutorial will show you how to develop Java microservices that use ConfigMaps, see how ConfigMaps are used, and update them in the app.

Updated October 20, 2020

by Ryan Dawson

· 81,914 Views · 18 Likes

Composite Design Pattern in Java

Want to learn more about the composite design pattern in Java? Take a look at this tutorial to learn how to implement this design pattern in your project.

Updated October 20, 2020

by Brijesh Saxena

CORE

· 62,987 Views · 18 Likes

Perceptron Explained Using Python Example - Data Analytics

In this post, you will learn about the concepts of Perceptron with the help of Python example. It is very important for data scientists to understand the con...

October 20, 2020

by Ajitesh Kumar

· 20,343 Views · 6 Likes

How to Scan a Barcode Image in Java

Use an API to scan or look up a barcode. Supported barcode types include AZTEC, CODABAR, CODE_39, CODE_93, CODE_128, DATA_MATRIX, EAN_8, EAN_13, ITF, MAXICODE, PDF_417, QR_CODE, RSS_14, RSS_EXPANDED, UPC_A, UPC_E, All_1D, UPC_EAN_EXTENSION, MSI, PLESSEY, and IMB.

October 20, 2020

by Brian O'Neill

CORE

· 11,255 Views · 1 Like