Bukkit

public class RuneEffectBurn extends RuneEffect{
	
	private static final long serialVersionUID = 123456789L;
        //It's important to have this in youre class.
        //Just replace 123456789L with an auto generated ID.

	@Override
	public void execute(Rune rune) {
		//You can write the code for youre effect here.
                //You can access all parameters of the rune.
	}
	
}