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

public class LineDemo extends JFrame{

	public LineDemo(){
		super("實線與虛線"); //調用父類構造函數		
		setSize(300,200); //設置窗口尺寸
		setVisible(true); //設置窗口可視
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //關閉窗口時退出程序
	}
	
	public void paint(Graphics g){ //繪制組件方法
		Graphics2D g2=(Graphics2D)g; //得到2D圖形
		Dimension dim = this.getSize(); //得到組件尺寸
    	g2.setColor(Color.white); //設置繪制顏色為白色
    	g2.fillRect(0, 0, dim.width, dim.height); //填充整個組件
    	g2.setColor(Color.black); //設置繪制顏色
		g2.drawLine(40,160,280,160); //繪制實線
		g2.drawLine(40,160,40,40);
		g2.drawString("0",30,165); //繪制字符串
		g2.drawString("100",16,50);
		g2.drawString("200",270,175);
		
		float[] dash={5,5}; //短劃線圖案
		BasicStroke bs = new BasicStroke(1,BasicStroke.CAP_BUTT,BasicStroke.JOIN_MITER, 10.0f,dash,0.0f); //實例化新畫刷
		g2.setStroke(bs); //設置新的畫刷		

		g2.drawLine(40,160,100,120); //用新的畫刷繪制虛線
		g2.drawLine(100,120,160,120);
		g2.drawLine(160,120,280,40);

	}

	public static void main(String[] args){
		new LineDemo();
	} 
}