GlassGhost / EventTestQT

EventTestQT

EventTest is a APACHE Licensed Event Throwing example Java Program. It is also an example of the Apache Ant build system.

Build Instructions

To git clone AND build AND run on a Debian(or Ubuntu) machine simply run the following:

sudo apt-get install -y ant default-jdk git build-essential
git clone https://github.com/GlassGhost/EventTestQT
cd ./NoSpringBoot
ant
java -jar './EventTestQT.jar'

---

get QT Java Library "qtjambi"

Before you run the Apache "Ant" command, In the "lib" folder you need a copy of the libraries needed for this project:

• qtjambi-5.15.5.jar
• qtjambi-native-linux-x64-5.15.5.jar
• qtjambi-native-windows-x64-5.15.5.jar
• qtjambi-native-macos-5.15.5.jar

These were the latest versions at the time of writing, Search on maven.org/search?q=g:io.qtjambi for more up to date versions.

---

How to Use Events In Java

There are 3 different ways you may wish to set this up:

1. Thrower inside of Catcher
2. Catcher inside of Thrower
3. Thrower and Catcher inside of yet another class in this example Test

This Example Project Defaults to Option 3, to try the others simply uncomment the "Optional" code block of the class you want to be main, and set that class as the ${Main-Class} variable in the build.xml file:

That being said 4 Things needed on throwing side code:

import java.util.*;//import of java.util.event

//Declaration of the event's interface type, OR import of the interface,
//OR declared somewhere else in the package
interface ThrowListener {
	public void Catch();
}
/*_____________________________________________________________*/class Thrower {
//list of catchers & corresponding function to add/remove them in the list
	List<ThrowListener> listeners = new ArrayList<ThrowListener>();
	public void addThrowListener(ThrowListener toAdd){ listeners.add(toAdd); }
	//Set of functions that Throw Events.
		public void Throw(){ for (ThrowListener hl : listeners) hl.Catch();
			System.out.println("Something thrown");
		}
////Optional: 2 things to send events to a class that is a member of the current class
. . . go to Thrower.java file see this code . . .
}

---

2 Things needed in a class file to receive events from a class

/*_______________________________________________________________*/class Catcher
implements ThrowListener {//implement added to class
//Set of @Override functions that Catch Events
	@Override public void Catch() {
		System.out.println("I caught something!!");
	}
////Optional: 2 things to receive events from a class that is a member of the current class
. . . go to Catcher.java file see this code . . .
}