Language Resources

Jackson Annotations for JSON (Part 4): General Annotations

In this final series post about Jackson annotations, let's look at some general use annotations that are handy to have at the ready.

December 26, 2017

by John Thompson

· 115,597 Views · 10 Likes

Connecting a PostgreSQL Database With Apache Camel

The jdbc: and sql: components in Apache Camel are similar, but vastly different. Let's see how you can use them to connect to a Postgres database.

December 26, 2017

by Jitendra Bafna

CORE

· 29,335 Views · 9 Likes

Random Number Generation in Java

Need some randomness in your numbers? Check out a few different techniques you can avail yourself of to create random (or mostly random) numbers in Java.

December 26, 2017

by John Thompson

· 1,267,900 Views · 31 Likes

Migration of Legacy DB/File Structure to RDBMS

Migration is difficult, but sometimes, it's required — like if you want to improve your database's performance or utilize features of the target RDBMS that are missing in the source.

December 25, 2017

by Krishna Anumarlapudi

· 9,151 Views · 8 Likes

Jackson Annotations for JSON (Part 3): Deserialization

As we continue our journey through Jackson annotations, let's see what you can use to help control deserialization of JSON into POJOs.

Updated December 25, 2017

by John Thompson

· 162,483 Views · 10 Likes

Accessing Git Repos With Java Using SSH Keys

See how you can use SSH keys to gain access to Git repos from Java apps. We'll use JGit and cover some customizations you can introduce.

December 25, 2017

by Sebastian Daschner

· 29,099 Views · 8 Likes

Kotlin DSL: From Theory to Practice

Kotlin's DSL properties are legendary, so let's walk through each of the important tools available in your kit and see how to put them to use.

December 24, 2017

by Ivan Osipov

· 34,796 Views · 20 Likes

Multi-Release JARs: Good or Bad Idea?

The folks at Gradle feel that Java 9's multi-release JARs are a poor solution to a real problem for library designers. See how to create an MRJAR and why you shouldn't.

December 23, 2017

by Cédric Champeau

· 19,815 Views · 16 Likes

Too Many PreparedStatement Placeholders in Oracle JDBC

In this post, we discuss a particular error related to JDBC making calls out to an Oracle database. Read on for the details.

December 22, 2017

by Dustin Marx

· 17,490 Views · 2 Likes

Kotlin vs. Scala (vs. Java)

Java might be the grandaddy of them all, but there are new kids on the block. Let's see what makes Scala and Kotlin great, frustrating, and how they compare to Java.

December 22, 2017

by Nyma Malik

· 126,792 Views · 47 Likes

A Guide for Customer Retention Analysis With SQL

See how to make basic customer retention analysis, build customer retention over time, deal with new vs. existing customers retention curves, and calculate retention analysis in cohorts.

December 22, 2017

by Luba Belokon

· 27,216 Views · 4 Likes

A Deep Dive Into the Java ExecutorService

Take a dive into Java's ExecutorService to see how you can put it to use, including overviews of the various parameters at your disposal.

December 22, 2017

by Tim Ojo

· 177,033 Views · 33 Likes

Implicit vs. Explicit Cursor: Which Should You Use?

"Hmmm," you might be saying to yourself, "a conversation about SQL queries in a post on conditional logic? That's strange." Ah, but maybe not so strange.

December 20, 2017

by Steven Feuerstein

· 7,692 Views · 2 Likes

Install oh-my-zsh on Windows

This tutorial is for Windows users who want to set up oh-my-zsh, an open source framework for managing your z shell, or ZSH, configuration.

December 20, 2017

by Michal Bocek

· 27,570 Views · 2 Likes

Making Graph Databases Fun Again With Java

Graph databases need to be made fun again! Not to worry — the open-source TinkerPop from Apache is here to do just that.

December 20, 2017

by Otavio Santana

CORE

· 21,993 Views · 12 Likes

Looking Inside Postgres at a GiST Index

What does the GiST API do? And what does it mean to extend Postgres’s indexing system, exactly? Read on to find out!

December 19, 2017

by Pat Shaughnessy

· 11,286 Views · 5 Likes

Data Transformation: CSV to XML With Apache Camel

Learn how to convert a CSV message into XML using Camel Apache Processor, or from any format into another, with code examples.

Updated December 19, 2017

by Jitendra Bafna

CORE

· 41,166 Views · 7 Likes

Data Transformation: XML to JSON And JSON to XML With Apache Camel

In this tutorial, you will learn how to achieve data transformation by converting XML to JSON and JSON to XML with Apache Camel.

December 19, 2017

by Jitendra Bafna

CORE

· 55,022 Views · 7 Likes

Organizing Resource Files for Tests Using Maven and Java

We take a look at how to organize your resource files for testing in your Java application by making use of Maven. Here's how to ensure your hierarchy works.

December 19, 2017

by Alan Richardson

· 47,120 Views · 9 Likes

JAX-RS List Generic Type Erasure

When using JAX-RS resource methods, be sure you know how to maintain your Lists' generic types. This guide will tell you how to handle type erasure.

December 18, 2017

by Alex Theedom

· 18,815 Views · 3 Likes

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