Graphical coding :Java applet

The program below is executable, but UNDER CONSTRUCTION.

import java.applet.*;
import java.awt.*;

public class Draw2 extends Applet {


 
  public void init(){

 
   // System.out.println("パラメーターが整数ではありません");
    setBackground(Color.white);
  }

  public void paint(Graphics g){
    //getSize().widthの幅の右から70pixは、文字情報表示
   
    /*set colors*/
    Color lightyellow = new Color(255,255,180);
    Color lightblue = new Color(180,255,255);
    Color blue = new Color(0,0,255);
    Color pink = new Color(255,180,255);
    Color red = new Color(255,0,0);
    Color green = new Color(0,255,0);
    Color black = new Color(0,0,0);   

//描画順にどんどん上塗りされていくことに注意する。


    /*最初にコドン領域を描画したらいい？*/
    g.setColor(lightyellow);
    g.fillRect(100+1, 200, getSize().width - 400, 50);//コドン認識領域を描く
    g.setColor(lightblue);
    g.fillRect(100+1, 275, getSize().width - 400, 50);//コドン認識領域を描く


   
    g.setColor(black);
    g.drawLine(100, 0, 100, getSize().height );//軸を描く

   
    g.setColor(blue);
    g.drawLine(200, 0, 200, getSize().height );//軸を描くtrna1:blue line
    g.setColor(red);
    g.drawLine(300, 0, 300, getSize().height );//軸を描くtrna2:red line




   
    int p1,p2;
    int l1,l2;
    int t;

    t=0;

    p1 = 250;
    p2 = 190;
    l1 = 50;
    l2 = 50;
   
    g.setColor(blue);
    g.fillRect(190, p1+l1, 20, l1*2 );    //trna1認識範　g.fillRect(x(fixed),y,width(fixed),height)
    g.setColor(red);
    g.fillRect(290, p2+l2, 20, l2*2 );    //trna2認識範囲 same here.
   

   
    g.setColor(black);
    g.setFont(new Font("TimesRoman",Font.BOLD,15));
    g.drawString("The length of AI state =", getSize().width - 400, getSize().height - 10);
   
  }

}