📅  最后修改于: 2022-03-11 14:52:08.385000             🧑  作者: Mango
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class thisismytest2 {
public static void main(String[] args) {
final JFrame frame = new JFrame();
JPanel panel = new JPanel();
JTextField nameField = new JTextField("...", 2);
JButton button1 = new JButton();
final JLabel label1 = new JLabel();
label1.setText("txt");
label1.setVisible(false);
String txt = nameField.getText();
frame.add(panel);
panel.add(button1);
panel.add(label1);
frame.setSize(200,200);
frame.setVisible(true);
panel.add(nameField);
frame.setSize(600,400);
nameField.setBounds(400, 40, 400, 30);
button1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
label1.setVisible(true);
}
});
}
}