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Line.javaÎļþ-------Çý¶¯Àà
import javax.swing.JFrame;
public class Line
{
public static void main(String[] arg)
{
JFrame frame=new JFrame("Draw lines");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Linepanel pane=new Linepanel();
frame.getContentPane().add(pane);
frame.pack();
frame.setVisible(true);
}
}
Linepanel.javaÎļþ
import java.util.ArrayList;
import javax.swing.*;
import java.awt.*;
import java.awt.Point;
import java.awt.event.*;
public class Linepanel extends JPanel
{
private Point point1=null,point2=null;
private ArrayList<Point> pointlist;
public Linepanel()
{
pointlist=new ArrayList<Point>();
Linelistener listener=new Linelistener();
addMouseListener(listener);
addMouseMotionListener(listener);
setBackground(Color.black);
setPreferredSize(new Dimension(400,200));
}
public void paintComponent(Graphics page)
{
super.paintComponent(page);
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