import?javax.swing.*;
import?javax.swing.event.*;

import?java.awt.*;
import?java.awt.event.*;

public?class?DrawArcs?extends?Jframe{
???public?DrawArcs（）{
?????settitle（“無敵風火輪“）;
?????getContentPane（）.add（new?MainPanel（））;
???}
???public?static?void?main（String[]?args）{
?????DrawArcs?frame?=?new?DrawArcs（）;
?????frame.setDefaultCloseOperation（Jframe.EXIT_ON_CLOSE）;
?????frame.setSize（400?400）;
?????frame.setVisible（true）;
???}
}
class?MainPanel?extends?JPanel{
	ArcsPanel?arcsPanel=new?ArcsPanel（）;
	JSlider?jslh;
	JPanel?jp;
	JButton?j1j2j3j4j5j6;
	MainPanel（）{
		setLayout（new?BorderLayout（））;
		add（arcsPanel?BorderLayout.CENTER）;
		
		jslh=new?JSlider（JSlider.HORIZONTAL?0?100?20）;
	
		jslh.addChangeListener（new?SliderHandler（））;
		jp=new?JPanel（）;	
		j1=new?JButton（“開始“）;
		j2=new?JButton（“停止“）;
		j3=new?JButton（“加速“）;
		j4=new?JButton（“減速“）;
		j5=new?JButton（“反轉“）;
		
		jp.add（j1）;
		jp.add（j2）;
		jp.add（j3）;
		jp.add（j4）;
		jp.add（j5）;
		
		add（jpBorderLayout.SOUTH）;
		jslh.setMajorTickSpacing（20）;
		jslh.setPaintLabels（true）;
		add（jslh?BorderLayout.NORTH）;
		
		j1.addActionListener（new?ActionListener（）
		{
			public?void?actionPerformed（ActionEvent?arg0）?{
				
				arcsPanel.increment=3;
				
			}	
		}）;
		j2.addActionListener（new?ActionListener（）{

			public?void?actionPerformed（ActionEvent?arg0）?{

				arcsPanel.increment=0;
			}	
		}）;
		j3.addActionListener（new?ActionListener（）{

			public?void?actionPerformed（ActionEvent?arg0）?{

				if（arcsPanel.increment>0）
				{
					arcsPanel.increment++;
				}
				else
				{
					arcsPanel.increment--;
					}
			}
		}）;
		j4.addActionListener（new?ActionListener（）{

			public?void?actionPe