drawjpanel.java

来自「32个java程序源代码」· Java 代码 · 共 41 行

// Tutorial 21: DrawJPanel.java
// This class allows the user to draw and erase on the application.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class DrawJPanel extends JPanel
{
   // Point to hold the mouse cursor's location
   private Point currentPoint;

   // constants for the drawn circle
   private final Color DRAW_COLOR = Color.BLUE;
   private final int DRAW_DIAMETER = 8;

   // instance variables for the circle
   private Color drawColor;
   private int drawDiameter;
   
   // constructor
   public DrawJPanel()
   {

   }  // end constructor

} // end class DrawJPanel

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