JavaWorld Core Java

• Web services in Java SE, Part 3: Creating RESTful Web services September 2, 2017
  Part 2 of this four-part series on Java SE Web services showed how to use the JAX-WS API to develop SOAP-based Web services. JAX-WS also supports RESTful-based Web services, which this article shows how to develop. It first defines and then builds and runs a library Web service, and next defines, builds, and runs a […]
• The case for Oracle to cede control of Java SE September 1, 2017
  Now that Oracle wants to turn over leadership of enterprise Java’s (Java EE’s) development to a still-unnamed open source foundation, might the same thing happen with the standard edition of Java (Java SE) that Oracle also controls? Such a move could produce substantial benefits. But it does not seem unlikely, at least at the moment.Oracle […]
• Jenkins Blue Ocean UI to provide code quality insights August 31, 2017
  Blue Ocean, the new user interface for the popular Jenkins continuous integration and continuous delivery (CI/CD) platform, will begin incorporating insights into code quality trends and static analyses, under an improvement plan detailed this week by the project’s creator.The goal is to improve the developer’s visibility into the health of software projects, Blue Ocean creator […]
• Java 101: Datastructures and algorithms in Java, Part 1 August 10, 2017
  Datastructures and algorithms are essential to computer science, which is the study of data, its representation in memory, and its transformation from one form to another. In programming, we use datastructures to store and organize data, and we use algorithms to manipulate the data in those structures. The more you understand about datastructures and algorithms, […]
• 21 technologies transforming software development August 3, 2017
  A long time ago, developers wrote assembly code that ran fast and light. On good days, they had enough money in their budget to hire someone to toggle all those switches on the front of the machine to input their code. On bad days, they flipped the switches themselves. Life was simple: The software loaded […]
• Web services in Java SE, Part 1: Tools overview July 21, 2017
  Java Standard Edition (SE) 6 included support for Web services. This post begins a four-part series on Web services in Java SE by explaining what Web services are and overviewing Java SE's support for them. Future posts will use this support to build SOAP-based and RESTful-based Web services, and will also cover advanced Web service […]
• 21 rules for faster SQL queries July 20, 2017
  Everyone wants faster database queries, and both SQL developers and DBAs can turn to many time-tested methods to achieve that goal. Unfortunately, no single method is foolproof or ironclad. But even if there is no right answer to tuning every query, there are plenty of proven do’s and don’ts to help light the way. While […]
• Luna brings visual development to functional programming July 6, 2017
  Described by the creators as a developer’s whiteboard “on steroids,” the Luna functional language promises to enable application assembly by clicking and dragging visual elements together.Expected to be released as open source when Luna reaches beta, its compiler will produce native code for the developer’s choice of Linux, MacOS, Windows, or JavaScript. The team behind […]
• Java library evolution and other puzzlers July 4, 2017
  Exploring puzzling code to figure out why it doesn't do what seems obvious is one way to improve your programming skills. In this post, I introduce you to various Java-oriented puzzlers from Jens Dietrich, Joshua Bloch and Neal Gafter, and myself.Java Library Evolution Puzzlers Q: What is the Java Library Evolution Puzzlers?A: The Java Library […]
• The road to Java 9: Only critical bugs getting fixed now June 23, 2017
  With the initial release candidate build for Java 9 now published, Oracle has proposed that from here on out, only “showstopper” bugs be fixed for the production Java 9 release, which is due September 21.The proposal floated this week represents a further tightening up of bug-fixing goals for RDP (Rampdown Phase) 2 of the Java […]