package event;
import java.awt.*;
import java.awt.event.MouseEvent ;//这个包没用，报错
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class MouseEvent {
static Panel panel;
static TextField textfield1;
static TextField textfield2;
static Frame f = new Frame("Test");
public static void main(String[] args) {
// TODO Auto-generated method stub
MouseEvent med = new MouseEvent();
f.setLayout(new GridLayout(3, 1));
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
f.setVisible(false);
f.dispose();
System.exit(0);
}
});
f.setSize(500, 500);
f.setVisible(true);
textfield1 = new TextField(20);
textfield2 = new TextField();
f.add(textfield1);
f.add(textfield2);
panel = new Panel();
panel.setBackground(Color.cyan);
f.add(panel);
panel.addMouseListener (new MouseListener() {//（方法未实现，报错）
public void mouseClicked(MouseEvent eve) {
textfield2.setText("X=" + eve.getX() + ";Y=" + eve.getY());}
public void mouseEntered(MouseEvent eve) {
textfield1.setText("鼠标进入面板区域");}
public void mouseExited(MouseEvent eve) {
textfield1.setText("鼠标离开面板区域");}
public void mousePassed(MouseEvent eve) {
textfield1.setText("鼠标被按下");}
public void mouseReleased(MouseEvent eve) {
textfield1.setText("鼠标离开");}
});
}
protected int getY() {
// TODO Auto-generated method stub
return 94;
}
protected int getX() {
// TODO Auto-generated method stub
return 36;
}
}
MouseEvent med = new MouseEvent();
这块不是用到了吗
你的类名不要跟工具类同名了啊。
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class DemoMouseEvent extends JFrame implements MouseListener{
private JTextArea text = new JTextArea(); //文本框组件是主类私有属性
public DemoMouseEvent()
{
Init();
}
public void Init()
{
super.setTitle("演示鼠标事件");// 设置窗口的标题
JScrollPane root = new JScrollPane(text);// 给面板增加滚动栏
root.setBounds(10, 10, 300, 200);// 设置面板的绝对位置
super.add(root);// 把面板加入窗口中
text.addMouseListener(this);// 给文本框组件增加鼠标监听
super.setSize(310, 210);
super.setVisible(true);
super.addWindowListener( //窗口事件
new WindowAdapter()
{
public void windowClosing(WindowEvent arg0)
{
System.exit(1);
}
}
);
}
@Override
public void mouseEntered(MouseEvent e)// 鼠标进入组件
{
text.append("鼠标进入文本框.\n");
}
@Override
public void mouseExited(MouseEvent e)// 鼠标退出组件
{
text.append("鼠标退出文本框.\n");
}
@Override
public void mousePressed(MouseEvent e)// 鼠标按下
{
text.append("按下鼠标.\n");
}
@Override
public void mouseReleased(MouseEvent e)// 鼠标松开
{
text.append("松开鼠标.\n");
}
@Override
public void mouseClicked(MouseEvent e)
{
text.append("点击鼠标.\n");
}
public static void main(String[] args) {
new DemoMouseEvent();
}
}