Question

JAVA为何鼠标事件没响应

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class JButtonExample implements ActionListener, MouseListener {
JFrame f;

JButton b;

JTextField t,t1;

int tag = 0;

public static void main(String[] args) {
JButtonExample tb = new JButtonExample();
tb.go();

}

public void go() {

JFrame f = new JFrame("button");
Container content = f.getContentPane();
JButton b = new JButton("sample");
b.addActionListener(this);
content.add(b, "South");
t = new JTextField();
t1 = new JTextField();
content.add(t, "Center");
content.add(t1, "North");
f.addMouseListener(this);
// String s="press the button";
// t.setText(s);
f.setSize(300, 300);
f.setVisible(true);

}

public void actionPerformed(ActionEvent e) {
String s1 = "press the button";
String s2 = "press ";
if (tag == 0) {
t.setText(s1);
tag = 1;
} else {
t.setText(s2);
tag = 0;
}
}

public void mouseClicked(MouseEvent e) {
String s3 = "button";
//t.setText(s3);
System.out.println("enter");
}

public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
String s2 = "press ";
t1.setText(s2);
}

public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub

}

public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub

}

public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub

}

}

Answer 1

修改
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class JButtonExample implements ActionListener, MouseListener {
JFrame f;

JButton b;

JTextField t, t1;

int tag = 0;

public static void main(String[] args) {
JButtonExample tb = new JButtonExample();
tb.go();

}

public void go() {

JFrame f = new JFrame("button");
Container content = f.getContentPane();
JButton b = new JButton("sample");
b.addActionListener(this);
content.add(b, "South");
t = new JTextField();
t1 = new JTextField();
content.add(t, "Center");
content.add(t1, "North");
b.addMouseListener(this);
// String s="press the button";
// t.setText(s);
f.setSize(300, 300);
f.setVisible(true);

}

public void actionPerformed(ActionEvent e) {
String s1 = "press the button";
String s2 = "press ";
if (tag == 0) {
t.setText(s1);
tag = 1;
} else {
t.setText(s2);
tag = 0;
}
}

public void mouseClicked(MouseEvent e) {
String s3 = "button";
t1.setText(s3);
System.out.println("enter");
}

public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
String s2 = "press ";
t1.setText(s2);
}

public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub

}

public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub

}

public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub

}

}

追问

你的改的哪里哦，我怎么看不出来有什么不同呢

Answer 2

路过、、、