Minimal ControlP5

controlP5_example.pde

import controlP5.*;
import javax.swing.JFrame;

PFrame f = null;
Applet s;

ControlP5 cp5;

void setup()
{
    size(800, 800, P2D);
    if(f==null)f = new PFrame();

    cp5 = new ControlP5(this);
    cp5.addSlider("slider")
        .setRange(0, 200)
        .setWidth(500)
        .setHeight(30)
        .setPosition(20, 20)
        .setValue(100);

}

void draw()
{
}

public void slider(float theColor)
{
    println("a slider event. setting background to "+theColor);
}

public class Applet extends PApplet {

  public void setup() {
    size(600, 900);
     noLoop();
  }
  public void draw() {
    fill(0);
    ellipse(400, 60, 20, 20);
  }
  /*
   * TODO: something like on Close set f to null, this is important if you need to 
   * open more secondapplet when click on button, and none secondapplet is open.
   */
}

public class PFrame extends JFrame {
  public PFrame() {

    setBounds(0, 0, 600, 340);
    s = new Applet();
    add(s);
    s.init();
    println("birh");
    show();
  }
}