( ソース )

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

public class SS4 extends Applet{
	Graphics g;
	Image image;

	int width;
	int height;

	public void init(){

		//g = setGraphics();
	
		String parameter;

		Panel panel = new Panel();
		add("Buttons",panel);
		panel.add(new Button("超音波センサ"));
		panel.add(new Button("赤外線センサ"));
		panel.add(new Button("タッチセンサ"));
		panel.add(new Button("モーター"));
		panel.add(new Button("MPUボード"));
		panel.add(new Button("I/Oボード"));
		panel.add(new Button("MMIボード"));
		width = this.size().width;
		height = this.size().height;
		resize(width, height);
	}

	public boolean action(Event event, Object event_object){
		if(event_object.equals("超音波センサ")){
			image = getImage(getCodeBase(), "sssj2'.gif");
			repaint();
		}
		else if(event_object.equals("赤外線センサ")){
			image = getImage(getCodeBase(), "infj2'.gif");
			repaint();
		}
		else if(event_object.equals("タッチセンサ")){
			image = getImage(getCodeBase(), "mmi1''.gif");
			repaint();
		}
		if(event_object.equals("モーター")){
			image = getImage(getCodeBase(), "pdj2'.gif");
			repaint();
		}
		else if(event_object.equals("MPUボード")){
			image = getImage(getCodeBase(), "mpcj1.gif");
			repaint();
		}
		else if(event_object.equals("I/Oボード")){
			image = getImage(getCodeBase(), "cpust.gif");
			repaint();
		}
		if(event_object.equals("MMIボード")){
			image = getImage(getCodeBase(), "mmij2'.gif");
			repaint();
		}
		return true;
	}
	
	public void paint(Graphics g){
		g.drawImage(image, 0, 0, width, height, this);
	}
}