Button

...

class button {
  int x;
  int y;
  String name;
  int i;
  button(String n, int x, int y) {
    this.name=n;
    this.x=x;
    this.y=y;
  }
  void display() {
    fill(#E535A5);
    rect(x, y, 160, 50);
    textSize(20);
    fill(0);
    if ((mousePressed&&mouseX>=x&&mousePressed&&mouseX<=x+80)&&(mousePressed&&mouseY>=y&&mousePressed&&mouseY<=y+50)) {
      text("Panadda ", 100, 110);
    }else {
      text("Click ", 120, 110);
    }
  }
  void click() {
    if ((mousePressed&&mouseX>=x&&mousePressed&&mouseX<=x+80)&&(mousePressed&&mouseY>=y&&mousePressed&&mouseY<=y+50)) {
      if (i%8==0) {
        println(this.name);
      }
      i=i+1;
    }
  }
}
void setup() {
  size(300, 300);
}
void draw() {
  background(0);
  button a =new button("Panadda", 65, 80);
  a.display();
  a.click();
}