//希望对你有用.另外的问题,在这也有解答.
import java.awt.*;
import java.applet.*;
import java.awt.event.*;public class MousePress extends Applet implements MouseListener{
Graphics g;
public void init(){
addMouseListener(this);
g = getGraphics(); }
public void mousePressed(MouseEvent e) {
display();
} public void mouseReleased(MouseEvent e) {
} public void mouseEntered(MouseEvent e) {
} public void mouseExited(MouseEvent e) {
clear();
} public void mouseClicked(MouseEvent e) {
} public void display(){
g.drawRect(100,100,50,50);
}
public void clear(){
g.clearRect(0,0,getWidth(),getHeight());
}
}
import java.awt.*;
import java.applet.*;
import java.awt.event.*;public class MousePress extends Applet implements MouseListener{
Graphics g;
public void init(){
addMouseListener(this);
g = getGraphics(); }
public void mousePressed(MouseEvent e) {
display();
} public void mouseReleased(MouseEvent e) {
} public void mouseEntered(MouseEvent e) {
} public void mouseExited(MouseEvent e) {
clear();
} public void mouseClicked(MouseEvent e) {
} public void display(){
g.drawRect(100,100,50,50);
}
public void clear(){
g.clearRect(0,0,getWidth(),getHeight());
}
}
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