Initialize a new object from class in Enum

Question

I have an Enum called Plugins:

public enum Plugins {

    ROTATING_LINE (plugin.rotatingline.RotatingLine.class),
    SNOW_SYSTEM (plugin.snow.SnowSystem.cla         


        

Answer 1

Create an interface for the plugins

public interface Plugin{
     setShapeType();
     setX();
     setY();
     ...
  }

Create a method on the enum that creates an instance of Plugin.

public enum Plugins {

        ROTATING_LINE (plugin.rotatingline.RotatingLine.class),
        SNOW_SYSTEM (plugin.snow.SnowSystem.class);

        private Class<? extends Plugin> c;

        private Plugins (Class<? extends Plugin> c) {
            this.c = c;
        }

        // This acts as a constructor that takes args, I am assuming the args you need 
        public Class<? extends Plugin> createInstance(String shapeType,int x, int y) {
            Plugin plugin = c.newInstance();
            plugin.setShapeType(shapeType);
            plugin.setX(x);
            plugin.setY(y);
            return plugin;
        }

    }

Instantiate in loop

List<Plugin> myPlugins = new ArrayList<Plugin>();

for (Plugins plugins : Plugins.values()) {
    myPlugins.add(plugin.createInstance(Shaped.parent, 400, 400));
}

Please note this is Psuedo Code

Answer 2

There are 2 ways:

1. use Enum.valueOf() static function, then cast it into your enum type.

   Enum v = Enum.valueOf(TheEnumClass, valueInString);
   

2. Use class.getEnumConstants() function to get the list of the enum constants, and loop this list and get.

   Plugins[] plugins = Plugins.class.getEnumConstants();
   for (Plugins plugin: plugins) {
       // use plugin.name() to get name and compare
   }