Java Resources

HTTP Status 405 with Spring Security with Custom Form Login Using JavaConfig

Want a custom login form created with JavaConfig? Here's a neat tutorial, which breaks down initial config, additions, and shows you why.

December 10, 2015

by Mick Knutson

· 22,682 Views · 5 Likes

High-Concurrency HTTP Clients on the JVM

HTTP is a super popular app protocol with loads of libraries. Here's a look at high-concurrency HTTP clients on Java virtual machines.

December 8, 2015

by Fabio Tudone

· 90,282 Views · 35 Likes

Yet Another Robust Way to Listen to Hibernate Events

How to use some of the great new interfaces in Hibernate 4.

December 5, 2015

by Taimur Mirza

· 11,358 Views · 11 Likes

This Week in Spring, Dec. 4, 2015

Read the ten recent stories around Spring that came out this week.

December 4, 2015

by Josh Long

· 3,896 Views · 3 Likes

Convert TIFF Images to PDF/JPEG in Java

This code snippet that uses the iText library can convert TIFF files into PDF or JPEG using Java.

December 3, 2015

by Shrisowdhaman Selvaraj

· 35,875 Views · 3 Likes

When Mockito’s InjectMocks Does Not Inject Mocks

How to perform unit tests in Java using Mockito's InjectMocks tool and how to get it working.

December 3, 2015

by Dror Helper

· 93,136 Views · 9 Likes

Calling Stored Procedures From Spring Data JPA

It is a common requirement to JPA connect to stored procedures or database functions. This article looks at how you can do this using Spring Data JPA.

November 30, 2015

by Martin Farrell

· 242,322 Views · 21 Likes

Presentations with Remark and Mermaid

Browser-based presentations are portable, easy to edit, and they convert easily to PDF. Plus embedded code snippets are a lot easier.

November 28, 2015

by Alan Hohn

· 9,045 Views · 4 Likes

An Introduction to TDD With Java

Learn the basics of Test-Driven-Development (TDD) with Java and JUnit, but the concepts are applicable to any language.

November 23, 2015

by Alexey Zvolinskiy

· 57,081 Views · 30 Likes

Java EE 8 MVC + Leaflet Map Demo

Replace static maps with Java EE 8's new MVC features and Leaflet, an open source JavaScript library for interactive maps.

November 23, 2015

by Lumir Vanek

· 22,753 Views · 4 Likes

Why 1000 == 1000 Returns False, but 100 == 100 Returns True in Java?

Here's a little code puzzler to help you be a little better at Java.

November 18, 2015

by A N M Bazlur Rahman

CORE

· 59,590 Views · 45 Likes

Java 8 vs. Scala, Part II: the Streams API

A continuation of a series on using Java vs. Scala, and using the Streams API to collect and manipulate data.

November 17, 2015

by Hussachai Puripunpinyo

· 38,261 Views · 27 Likes

A Quick Guide to Golang for Java Developers

Go is awesome and you should learn it. Here's how.

November 16, 2015

by Christian Posta

· 30,797 Views · 23 Likes

A Beginner's Guide to Executable Java Applications

Intended for Java novices, this is a guide to executable and nonexecutable Java applications.

November 12, 2015

by Mala Gupta

· 30,461 Views · 3 Likes

Java Serialization Vulnerability Threatens Millions of Applications

Contrast security is promoting their solution for a vulnerability that affects WebLogic, WebSphere, JBoss, Jenkins, and OpenNMS.

November 12, 2015

by Jeff Williams

· 12,862 Views · 3 Likes

Getting Started With Dropwizard: Connecting to a Database Using Hibernate

Learn how to use the Dropwizard to connect to a databases of your choice using Hibernate.

November 12, 2015

by Dmitry Noranovich

· 50,100 Views · 5 Likes

Implementing Auto Retry in Java EE Applications

How do you handle the problem of inconsistent and unpredictable timeouts? In Java EE a good solution is interceptors.

November 6, 2015

by Abhishek Gupta

CORE

· 22,449 Views · 4 Likes

Java Memory Architecture Cheat Sheet

Understand the Java Memory Model for the heap, as well as garbage collection algorithms, and memory leak best practices all with diagrams and bite-sized descriptions.

November 4, 2015

by Sumith Puri

· 64,301 Views · 40 Likes

Java Multi-threading: Volatile Variables, Happens-before Relationship, and Memory Consistency

An explanation of what a volatile variable is in Java, when, and how to use it in your applications.

November 2, 2015

by MD Sayem Ahmed

· 49,426 Views · 26 Likes

Different Approaches to Sorting Elements of an ArrayList in Java

Learn different approaches for sorting elements of an ArrayList. One using Comparable and the other using Comparator.

November 1, 2015

by John Thompson

· 588,744 Views · 24 Likes

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