import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import processing.core.PApplet;

public class ProcessingShowcase {

	public static void main(String[] args){

		List<PApplet> sketches = new ArrayList<>();
		sketches.add(new ProcessingSketchOne());
		sketches.add(new ProcessingSketchTwo());
		//add sketch classes here!


		//this is optional, but causes the sketches to appear in random order
		//copy this to where the index is reset to randomize whenever you loop
		Collections.shuffle(sketches);

		int currentSketchIndex = 0;

		while(true){

			//using a broad exception to just skip over any sketches that have problems
			try {
				PApplet sketch = sketches.get(currentSketchIndex);
				String[] processingArgs = {""};
				PApplet.runSketch(processingArgs, sketch);

				// this is useful after we've looped
				sketch.getSurface().resumeThread();

				//how long do you want each sketch to display for
				//60 seconds
				Thread.sleep(60*1000);

				// prevent sketches from continuing to run while they're hidden
				sketch.getSurface().pauseThread();

				//hide the sketch
				sketch.getSurface().setVisible(false);
			}
			catch (Exception e) {
				System.err.println("There was a problem running a sketch!");
				e.printStackTrace();
				System.err.println("Skipping to the next sketch.");
			}

			// move to the next sketch, loop back to the first after finishing
			currentSketchIndex++;
			if(currentSketchIndex >= sketches.size()){
				currentSketchIndex = 0;
			}

			//go back to the top of the while(true) loop
		}
	}
}

import processing.core.PApplet;

public class MySketch extends PApplet {

	public void settings() {
		size(500, 500);
	}

	public void draw(){
		background(64);
		ellipse(mouseX, mouseY, 20, 20);
	}
}