jframe.java

来自「java技术内幕源代码,配合书籍看有事半功倍的效果」· Java 代码 · 共 59 行

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

/*
<APPLET
    CODE = jframe.class
    WIDTH = 350
    HEIGHT = 280>
</APPLET>
*/

public class jframe extends JFrame 
{
    jpanel j;

    public jframe() 
    {
        super("Swing application");

        Container contentPane = getContentPane();
        j = new jpanel();
        contentPane.add(j);
    }

    public static void main(String args[]) 
    {
        final JFrame f = new jframe();

        f.setBounds(100, 100, 300, 300);
        f.setVisible(true);
        f.setDefaultCloseOperation(DISPOSE_ON_CLOSE);

        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}

class jpanel extends JPanel 
{
    JTextField jtextfield = new JTextField("Hello from Swing!");

    jpanel()
    {
        setBackground(Color.white);
        add(jtextfield);
    }

    public void paintComponent (Graphics g)
    {
        super.paintComponent(g);
        g.drawString("Hello from Swing!", 0, 60);
    }
}