Java Resources

Tutorial covering authentication using SCRAM, authorization using Kafka ACL, encryption using SSL, and using camel-Kafka to produce/consume messages.

October 6, 2020

by Ramu kakarla

· 38,885 Views · 2 Likes

Oracle Database Link and Hibernate Mapping

The article is to describe how to create a Database link in Oracle and use Hibernate to create mapping for the remote table.

October 6, 2020

by Eason YIN

· 6,500 Views · 3 Likes

Facade Design Pattern In Java

Here I am with another article on design patterns. A Facade object is use to provide a simple interface by hiding complexities of a complex system.

October 6, 2020

by Brijesh Saxena

CORE

· 10,932 Views · 8 Likes

CRUD Operations on Deeply Nested Comments: Scalable Spring Boot and Spring Data approach

In this post, I present CRUD operations on deeply nested comments, stored in a relational database via Spring Boot and Spring Data. The approach is scalable but uses only JPQL and very few pessimistic locks.

October 6, 2020

by Alexander Eleseev

CORE

· 5,952 Views · 1 Like

Charsets and Unicode Identifiers in Java

Ever wanted to know exactly how characters and character sets work within a programming language? Check out this comprehensive article for more!

October 6, 2020

by Pravin Jain

· 10,855 Views · 5 Likes

Determining a File Type In Java

See some of the best tools that Java has to offer for determining file types within an application, including Apache Tika.

October 5, 2020

by Ercan Zengin

· 30,568 Views · 3 Likes

Abstract Factory Pattern In Java

In this article, I will try to highlight the usage of the Abstract Factory Pattern along with the difference with the Factory Pattern.

October 5, 2020

by Brijesh Saxena

CORE

· 10,826 Views · 8 Likes

InOrder Traversal Algorithm in Java

In this article, you will learn what is inorder traversal algorithm and how you can use it to print nodes of binary tree in sorted order in Java.

October 5, 2020

by Javin Paul

· 10,032 Views · 3 Likes

How to Convert XLSX to CSV in Java

Convert any Excel document to CSV with support for both XLSX and XLSB file formats, as well as legacy formats such as XLS.

October 5, 2020

by Brian O'Neill

CORE

· 12,593 Views · 3 Likes

How to Merge PDFs in Java

Combine two or more PDF files (pdf) into a single PDF document, preserving the order of the input documents in the combined document

October 5, 2020

by Brian O'Neill

CORE

· 4,301 Views · 2 Likes

Write a Kafka Producer Using Twitter Stream

With the newly open sourced Twitter HBC, a Java HTTP library for consuming Twitter’s Streaming API, we can easily create a Kafka twitter stream producer.

Updated October 5, 2020

by Saurabh Chhajed

· 38,548 Views · 13 Likes

Building an Amazon-Like Recommendation Engine Using Slash GraphQL

Get started using Dgraph's Slash GraphQL product and connect to a Spring Boot application which will act as a simple RESTful recommendation service

October 5, 2020

by John Vester

CORE

· 111,993 Views · 12 Likes

Protecting Your Domain-Driven Design from Anemia

What do Monopoly and domain-driven software development have in common? Check out the answer and 4 ways to keep your domain encapsulated and avoiding anemia.

October 2, 2020

by Stuart Meikle

· 9,634 Views · 11 Likes

Implementing a Web Chat With AI in Java

This article shows step by step how to implement a web chatbot using Java. Go through the steps of creating a new project and seeing the results!

Updated October 1, 2020

by Alejandro Duarte

CORE

· 39,305 Views · 11 Likes

Dynamic Schedulers and Custom Cross-Server Schedule Lock

In this article, we gonna look into TaskScheduler and configure schedulers dynamically based on the database values.

October 1, 2020

by Venkatesh Rajendran

CORE

· 4,803 Views · 3 Likes

Recycle Threads and Save Resources

Before we begin to talk about thread pool, let revisit threads. Threads are really powerful things. By creating multiple threads, multithreading, you can do ...

October 1, 2020

by Imran Shaikh

· 4,725 Views · 2 Likes