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BlueJScript @ the First BlueJ Day Houston, 2006

BlueJScript @ the First BlueJ Day Houston, 2006. Matthew C. Jadud University of Kent. Outline. What is it? Demo: Purple Cow “Hello World” Wherefore BlueJScript? Demo: Trails. What is BlueJScript?. It’s just Javascript… With privileges! What can it do? Full access to extensions API

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BlueJScript @ the First BlueJ Day Houston, 2006

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  1. BlueJScript @ theFirst BlueJ DayHouston, 2006 Matthew C. Jadud University of Kent

  2. Outline • What is it? • Demo: Purple Cow • “Hello World” • Wherefore BlueJScript? • Demo: Trails First BlueJ Day, Houston, Texas, 1st March 2006

  3. What is BlueJScript? • It’s just Javascript… • With privileges! • What can it do? • Full access to extensions API • Full access to standard Java libraries (java.*, javax.*) • BlueJ überscripting environment First BlueJ Day, Houston, Texas, 1st March 2006

  4. Demo: Purple Cow First BlueJ Day, Houston, Texas, 1st March 2006

  5. “Hello World” • In the project folder: • extensions/bluejscript.jar • profile.js • What do these do? • Without the BlueJScript extension, there is no BlueJScript • The profile.js is where the magic happens First BlueJ Day, Houston, Texas, 1st March 2006

  6. A simple profile.js • A “hello, world” if you will • Shows the BlueJScript console • Prints something to it • This is the BlueJ project I’ve called “SimpleProfile” First BlueJ Day, Houston, Texas, 1st March 2006

  7. A less simple profile.js • You’ll probably find yourself listening to BlueJ events a lot • This BlueJScript application: • Listens for any events from BlueJ • Prints out their name • This is the BlueJ project I’ve called “WatchingEvents” First BlueJ Day, Houston, Texas, 1st March 2006

  8. What you get • You have the full extensions API (effectively bluej.*) • BlueJScript provided support classes (the jsConsole, htmlPane, event handling…) • All of java.*, javax.* First BlueJ Day, Houston, Texas, 1st March 2006

  9. Start brainstorming… • You have full access to all of the Java class libraries from a dynamic scripting language! • In NetDemo, I grab data from external sources • In SwingDemo, I illustrate what might be a BlueJ bug, or BlueJScript worst-practice… First BlueJ Day, Houston, Texas, 1st March 2006

  10. Wherefore? • Low cost of entry • Neat things can be done simply as BlueJScript extensions • Full access to BlueJ • We can inspect classes and objects • Create objects, invoke methods • Windows, dialogs, etc… First BlueJ Day, Houston, Texas, 1st March 2006

  11. Take over world, contd. • Functional, dynamic language for driving BlueJ • Treat BlueJ, Java libs as a “rich API” for creating interactive instructional applications • Easy, lightweight deployment option for interacting with student code First BlueJ Day, Houston, Texas, 1st March 2006

  12. Demo: Trails • Provide scaffolding for adult learners tackling Java in a condensed course of study • Tackle syntax and semantics at a finer grain than Objects First • Represents a starting point for a class of applications, not an endpoint First BlueJ Day, Houston, Texas, 1st March 2006

  13. More questions? • bluej.org (Documentation) • bluej-discuss (mailing list) • mcj4@kent.ac.uk • Consider the list first… First BlueJ Day, Houston, Texas, 1st March 2006

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