import java.awt.event.*;
import java.util.*;public class myKeyMouse implements KeyListener, MouseListener{ private transient Vector keyListeners;
private transient Vector mouseListeners; public synchronized void removeKeyListener(KeyListener l) {
if (keyListeners != null && keyListeners.contains(l)) {
Vector v = (Vector) keyListeners.clone();
v.removeElement(l);
keyListeners = v;
}
}
public synchronized void addKeyListener(KeyListener l) {
Vector v = keyListeners == null ? new Vector(2) : (Vector) keyListeners.clone();
if (!v.contains(l)) {
v.addElement(l);
keyListeners = v;
}
}
protected void fireKeyTyped(KeyEvent e) {
if (keyListeners != null) {
Vector listeners = keyListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((KeyListener) listeners.elementAt(i)).keyTyped(e);
}
}
}
protected void fireKeyPressed(KeyEvent e) {
if (keyListeners != null) {
Vector listeners = keyListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((KeyListener) listeners.elementAt(i)).keyPressed(e);
}
}
}
protected void fireKeyReleased(KeyEvent e) {
if (keyListeners != null) {
Vector listeners = keyListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((KeyListener) listeners.elementAt(i)).keyReleased(e);
}
}
}
public void keyTyped(KeyEvent e) {
}
public void keyPressed(KeyEvent e) {
}
public void keyReleased(KeyEvent e) {
}
public synchronized void removeMouseListener(MouseListener l) {
if (mouseListeners != null && mouseListeners.contains(l)) {
Vector v = (Vector) mouseListeners.clone();
v.removeElement(l);
mouseListeners = v;
}
}
public synchronized void addMouseListener(MouseListener l) {
Vector v = mouseListeners == null ? new Vector(2) : (Vector) mouseListeners.clone();
if (!v.contains(l)) {
v.addElement(l);
mouseListeners = v;
}
}
protected void fireMouseClicked(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseClicked(e);
}
}
}
protected void fireMousePressed(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mousePressed(e);
}
}
}
protected void fireMouseReleased(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseReleased(e);
}
}
}
protected void fireMouseEntered(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseEntered(e);
}
}
}
protected void fireMouseExited(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseExited(e);
}
}
}
public void mouseClicked(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
}
import java.util.*;public class myKeyMouse implements KeyListener, MouseListener{ private transient Vector keyListeners;
private transient Vector mouseListeners; public synchronized void removeKeyListener(KeyListener l) {
if (keyListeners != null && keyListeners.contains(l)) {
Vector v = (Vector) keyListeners.clone();
v.removeElement(l);
keyListeners = v;
}
}
public synchronized void addKeyListener(KeyListener l) {
Vector v = keyListeners == null ? new Vector(2) : (Vector) keyListeners.clone();
if (!v.contains(l)) {
v.addElement(l);
keyListeners = v;
}
}
protected void fireKeyTyped(KeyEvent e) {
if (keyListeners != null) {
Vector listeners = keyListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((KeyListener) listeners.elementAt(i)).keyTyped(e);
}
}
}
protected void fireKeyPressed(KeyEvent e) {
if (keyListeners != null) {
Vector listeners = keyListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((KeyListener) listeners.elementAt(i)).keyPressed(e);
}
}
}
protected void fireKeyReleased(KeyEvent e) {
if (keyListeners != null) {
Vector listeners = keyListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((KeyListener) listeners.elementAt(i)).keyReleased(e);
}
}
}
public void keyTyped(KeyEvent e) {
}
public void keyPressed(KeyEvent e) {
}
public void keyReleased(KeyEvent e) {
}
public synchronized void removeMouseListener(MouseListener l) {
if (mouseListeners != null && mouseListeners.contains(l)) {
Vector v = (Vector) mouseListeners.clone();
v.removeElement(l);
mouseListeners = v;
}
}
public synchronized void addMouseListener(MouseListener l) {
Vector v = mouseListeners == null ? new Vector(2) : (Vector) mouseListeners.clone();
if (!v.contains(l)) {
v.addElement(l);
mouseListeners = v;
}
}
protected void fireMouseClicked(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseClicked(e);
}
}
}
protected void fireMousePressed(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mousePressed(e);
}
}
}
protected void fireMouseReleased(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseReleased(e);
}
}
}
protected void fireMouseEntered(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseEntered(e);
}
}
}
protected void fireMouseExited(MouseEvent e) {
if (mouseListeners != null) {
Vector listeners = mouseListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((MouseListener) listeners.elementAt(i)).mouseExited(e);
}
}
}
public void mouseClicked(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
}
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还有一个办法就是使用JFormattedTextField,使用Formatter,强制输入大写字母
本例子的文本框用事件处理后只能输入数字。
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.plaf.metal.*;
public class KeyTest extends JFrame
{
JButton btn;
JTextField txt;
JLabel lab;
public KeyTest()
{
setSize(500,300);
setLocation(150,150); Container con=getContentPane();
con.setLayout(null); btn=new JButton("点一下");
btn.setBorder(new EmptyBorder(0,0,0,0));
//btn.setBorder(new MetalBorders.ButtonBorder());
//btn.setBorder(new MetalBorders.Flush3DBorder());
btn.setSize(100,30);
btn.setLocation(200,150);
btn.addMouseListener(new BtnEvent()); txt=new JTextField("");
txt.setSize(400,30);
txt.setLocation(50,50);
txt.addKeyListener(new TxtEvent());
txt.addFocusListener(new TxtFocusEvent()); lab=new JLabel("提示:");
//lab.setBorder(new SoftBevelBorder(1,Color.red,Color.yellow));
lab.setSize(490,30);
lab.setLocation(0,240); con.add(btn);
con.add(txt);
con.add(lab); show();
btn.requestFocus();
txt.setText("请输入一些字符试一试!");
} public static void main(String[] args)
{
new KeyTest();
} //接口类
class BtnEvent implements MouseListener
{
public void mouseClicked(MouseEvent e)
{
if(e.isMetaDown())
{
System.out.println("么他");
}
}
public void mousePressed(MouseEvent e)
{
btn.setBorder(new SoftBevelBorder(1));
}
public void mouseReleased(MouseEvent e)
{
btn.setBorder(new SoftBevelBorder(0));
}
public void mouseEntered(MouseEvent e)
{
btn.setBorder(new SoftBevelBorder(0));
lab.setText("提示:你可以点击,看一看按钮的形状!");
}
public void mouseExited(MouseEvent e)
{
btn.setBorder(new EmptyBorder(0,0,0,0));
lab.setText("提示:");
}
} //键盘事件
class TxtEvent implements KeyListener
{
//当按下键时触发该方法
public void keyPressed(KeyEvent e)
{
if(e.isActionKey())
{
System.out.println("回应键");
}
if(e.isMetaDown())
{
System.out.println("鼠标右键");
}
}
//当松开键时触发该方法
public void keyReleased(KeyEvent e)
{
}
//上面两个动作产生该动作
public void keyTyped(KeyEvent e)
{
if((e.getKeyChar()>57) || (e.getKeyChar()<48))
{
lab.setText("提示:你只能输入数字!");
e.setKeyChar((char)0);
}
else
{
lab.setText("提示:输入正确!");
}
}
}
class TxtFocusEvent implements FocusListener
{
public void focusGained(FocusEvent event)
{
txt.setText("");
txt.setBackground(new Color(20,125,200));
}
public void focusLost(FocusEvent event)
{
txt.setBackground(Color.white);
}
}
}