Modify the sample drawing app used for the Command pattern to achieve the following (Refer to command pattern lecture for demo): - When you draw something and close the app, the last drawing should be saved automatically. - When the app is opened, the drawing will be restored and redrawn.

 

Answer:

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import java.awt.*;
import javax.swing.*;

public class Sample1 extends Frame
{
   public Sample1()
{
   this.setLayout(null);

   Font f1 = new Font("Arial" , Font.BOLD , 12);
  
   Font f2 = new Font("Arial" , Font.PLAIN , 12);

   Label lb1 = new Label("Enemy?");
   lb1.setBounds(50,100,50,80);
   lb1.setFont(f1);
  

   CheckboxGroup c1 = new CheckboxGroup();
   Checkbox ch1 = new Checkbox("Player approaches", true , c1);
   ch1.setBounds(100,130,120,80);
   ch1.setFont(f2);
  
   Checkbox ch2 = new Checkbox("Player runs" , false , c1);
   ch2.setBounds(280,130,150,80);
   ch2.setFont(f2);

   Label lb2 = new Label("Health?");
   lb2.setBounds(50,160,50,80);
   lb2.setFont(f1);
  
   CheckboxGroup c2 = new CheckboxGroup();

   Checkbox ch3 = new Checkbox("Full", true , c2);
   ch3.setBounds(100,190,50,80);
   ch3.setFont(f2);

   Checkbox ch4 = new Checkbox("Low" , false , c2);
   ch4.setBounds(240,190,50,80);
   ch4.setFont(f2);
  
   Checkbox ch5 = new Checkbox("No" , false , c2);
   ch5.setBounds(380,190,50,80);
   ch5.setFont(f2);
  
  
   Label lb3 = new Label("Ammo?");
   lb3.setBounds(50,220,50,80);
   lb3.setFont(f1);

   CheckboxGroup c3 = new CheckboxGroup();

   Checkbox ch6 = new Checkbox("Full", true , c3);
   ch6.setBounds(100,250,50,80);
   ch6.setFont(f2);

   Checkbox ch7 = new Checkbox("Low" , false , c3);
   ch7.setBounds(240,250,50,80);
   ch7.setFont(f2);

   Button btn1 = new Button("Action");
   btn1.setFont(f1);
   btn1.setBounds(200,335,80,30);

   add(lb1);
   add(ch1);
   add(ch2);
   add(lb2);
   add(ch3);
   add(ch4);
   add(ch5);
   add(lb3);
   add(ch6);
   add(ch7);
   add(btn1);
}
   public static void main(String ar[])
{
   Sample1 s1 = new Sample1();
   s1.setTitle("");
   s1.setSize(500,500);
   s1.setVisible(true);
}
}

Description-

Thiis is the full code of the Output. Here I have inserted Radio buttons given in the image.  Here the RadioButton are at default true state. If u require u can make it false by going in the CheckboxGroup condition and make it false.

I hope it helps , Good luck for your Future....

Output-