Language Resources

MongoDB Java API: Using a Sequence Collection With FindAndModify()

Documents in MongoDB have a unique object ID when they are created. How can we get around this to develop a more effective REST API when document lookups are involved?

July 6, 2016

by Kevin Hooke

· 10,395 Views · 2 Likes

Notify Events From PostgreSQL to External Listeners

What happens when you need to call external programs from a PostgreSQL database? Read on for a solution.

July 6, 2016

by Gonzalo Ayuso

· 30,370 Views · 4 Likes

Creating PDF Documents With Apache PDFBox 2

Learn how to create PDF Documents with Java and parse the text, with an addition about a bug that Apache PDFBox 2 exposes in JDK 8.

July 6, 2016

by Dustin Marx

· 59,039 Views · 4 Likes

Say No to Venn Diagrams When Explaining JOINs

It's easy to use Venn diagrams to explain JOINs, but when you think about it, they're not quite the right tool to use. That's where JOIN diagrams come in.

July 6, 2016

by Lukas Eder

· 15,662 Views · 32 Likes

Self-Describing Logging Using Log4J

How many times have you reviewed a log file without the data key (secret decoder ring) that explains what everything means. When a user more informative and intuitive format like JSON or XML? It's not too hard to do and can be quite helpful. Here's an example.

July 5, 2016

by Bob Reselman

· 8,467 Views · 2 Likes

Java 8 Optional—Replace Your Get() Calls

If we still use the get() functionality on optionals, we're effectively opening ourselves to the same problems as null checks. Here's how we should properly use this new tool in our arsenal.

July 5, 2016

by Mario Pio Gioiosa

· 129,053 Views · 87 Likes

Get Your Java Package Structures Right

Packaging is one of the underrated features of Java. IDEs are so smart that it only takes a few clicks to reorganize the whole project. But we can do better! We can really benefit from a good package structure.

July 4, 2016

by Grzegorz Ziemoński

· 38,689 Views · 26 Likes

Performance Improvement in Java Applications: ORM / JPA

This article recommends practices for when you are developing an application using a JPA provider or directly an ORM framework.

July 3, 2016

by Gustavo Gomes

· 31,068 Views · 49 Likes

Lombok, AutoValue, and Immutables

A great comparison of advanced java libraries to help remove boilerplate code from Java - Project Lombok, AutoValue, and Immutables

July 2, 2016

by Dustin Marx

· 28,146 Views · 14 Likes

Convert a List to a Comma-Separated String in Java 8

This quick tutorial shows you how to use streams in Java to convert the contents of a list to a comma-separated string in Java 8.

Updated June 29, 2016

by Mario Pio Gioiosa

· 531,330 Views · 24 Likes

Announcing Java EE Microprofile

At DevNation this week, a new Java EE profile was announced to help Enterprise Java make greater strides in working with microservices architectures.

June 29, 2016

by G. Ryan Spain

· 14,381 Views · 17 Likes

Displaying SQL Data in a Text Box Using C# [Code Snippet]

Here's a quick and easy way to put SQL database info into a text box when using C#.

June 29, 2016

by Arun kumar

· 28,085 Views · 3 Likes

Puppet Server: Advanced Memory Debugging

How to monitor, prevent, and debug memory issues in the open source and proprietary Puppet Server tools.

June 29, 2016

by Chris Price

· 7,056 Views · 1 Like

Implementing Opinion Mining With Python

Learn about the process of opinion mining with Python through reviews of shopping sites like Amazon, Flipkart, and GSM Arena.

June 29, 2016

by Shital Kat

· 19,813 Views · 10 Likes

CASE Statement in GROUP BY

Sometimes tackling a problem in a single query isn't the best approach. We have a look at a scenario where a CASE statement is needed in a GROUP BY clause. What's the best way to handle this?

Updated June 29, 2016

by Grant Fritchey

· 22,634 Views · 2 Likes

Zero-Downtime Deployment With a Database

Here's how to set up your database so that you'll be able to roll back to a previous version and update your connected app with zero downtime.

June 28, 2016

by Marcin Grzejszczak

· 17,650 Views · 8 Likes

Functional Programming in Pure Java: Functor and Monad Examples

This article looks at functors and monads from a specific angle of Java data structures and libraries.

June 28, 2016

by Tomasz Nurkiewicz

· 85,404 Views · 88 Likes

@MockBean—Spring Boot's Missing Ingredient

Testing support in Spring Boot is getting better, but it's far from perfect. The example here shows how to use Spring Boot in tandem with your mock testing.

June 28, 2016

by Grzegorz Poznachowski

· 88,015 Views · 22 Likes

Overview of Spring Aspect Oriented Programming (AOP)

This in-depth view of Aspect Oriented Programming in Spring includes extended examples, use cases, and definitions of AOP terms.

June 28, 2016

by James Warner

· 60,273 Views · 19 Likes

Python 101: How to Traverse a Directory

Python is so handy for operating system and administration work. Review how to traverse a directory here.

June 28, 2016

by Mike Driscoll

· 10,126 Views · 4 Likes

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