java第二十八课时

1文本框
2事件的类型和处理方法-键盘监听，鼠标监听
package com.hg.day28.demo01;

import javax.swing.;
import java.awt.;

public class TestTextDemo02 extends JFrame {
public TestTextDemo02(){
Container container = this.getContentPane();
JPasswordField passwordField = new JPasswordField();
passwordField.setEchoChar(’#’);
container.add(passwordField);
Label label = new Label();
// JTextField textField = new JTextField(“hello world”);
// JTextField textField2 = new JTextField(“大数据五班”);
// container.add(textField,BorderLayout.NORTH);
// container.add(textField2,BorderLayout.SOUTH);

    this.setVisible(true);
    this.setSize(500,350);
    this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public static void main(String[] args) {
    new TestTextDemo02();
}

}

package com.hg.day28.demo02;

import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class TextActionEvent {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setSize(400,400);
frame.locate(400,300);

    MyActionListener myListener = new MyActionListener();
    Button button= new Button();
    button.addActionListener(myListener);
    frame.add(button,BorderLayout.CENTER);
    frame.pack();
    frame.setVisible(true);
    frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

}
class MyActionListener implements ActionListener {

@Override
public void actionPerformed(ActionEvent e) {
    System.out.println("大数据五班");
}

}