左框右圆.rar_banduli_java程序_java编程

package 左框右圆; import java.awt.Color; import java.awt.Graphics; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JPanel; public class PressListener implements MouseListener { JPanel imageJPanel; public void getJPanel(JPanel j) { // TODO Auto-generated method stub imageJPanel = j; } public void mousePressed(MouseEvent e) { if(e.getButton()==1) { int n = e.getClickCount(); Graphics graphics = imageJPanel.getGraphics(); graphics.setColor(Color.red); graphics.drawRect(e.getX(), e.getY(), 10, 10); if(n==2) { imageJPanel.repaint(); } } if(e.getButton()==3) { Graphics graphics = imageJPanel.getGraphics(); graphics.setColor(Color.green); graphics.fillOval(e.getX(), e.getY(), 10, 10); } } @Override public void mouseReleased(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mouseEntered(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mouseExited(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mouseClicked(MouseEvent e) { // TODO Auto-generated method stub } }