java记事本中保存，另存为实践怎么写？

Question

我用的是swing组件,在jFrame上做的！谢谢了！

Answer 1

import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.io.IOException;import javax.imageio.ImageIO;
import javax.swing.*;
import java.io.*;import sun.audio.*;public class ButtonEvent
{
    public static void main(String[] args)
    {
        ButtonFrame frame = new ButtonFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}
class ButtonFrame extends JFrame
{
    public ButtonFrame()
    {
        setTitle("ButtonTest");
        setSize(400, 400);
        ButtonPanel panel = new ButtonPanel();
        add(panel);
    }
}
class ButtonPanel extends JPanel
{
    public ButtonPanel()
    {
        JButton yellowButton = new JButton("Yellow");
        JButton buleButton = new JButton("Blue");
        JButton redButton = new JButton("read");
        add(yellowButton);
        add(buleButton);
        add(redButton);
        ColorAction yellowAction = new ColorAction("111");
        ColorAction blueAction = new ColorAction("222");
        ColorAction redAction = new ColorAction("333");
        yellowButton.addActionListener(yellowAction);
        buleButton.addActionListener(blueAction);
        redButton.addActionListener(redAction);
    }
    public void paintComponent(Graphics g)
    {
        super.paintComponent(g);
    }    private class ColorAction implements ActionListener
    {
        public ColorAction(String s)
        {
            w = s;
        }
        public void actionPerformed(ActionEvent event)
        {
            JFrame frame = new JFrame();            frame.setVisible(true);
            frame.setTitle(w);            frame.setSize(300, 200);            ImagePanel panel = new ImagePanel();
            frame.add(panel);            try
            {
                FileInputStream fileau = new FileInputStream("C:\\WINDOWS\\Media\\tada.wav");
                AudioStream as = new AudioStream(fileau);
                AudioPlayer.player.start(as);
            }
            catch (FileNotFoundException ex)
            {
                frame.setTitle("Error");
            }
            catch (IOException ex)
            {
                frame.setTitle("Error");
            }        }        class ImagePanel extends JPanel
        {
            ImagePanel()
            {
                try
                {
                    image = ImageIO.read(new File("d:\\1.jpg"));
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            public void paintComponent(Graphics g)
            {
                super.paintComponent(g);
                g.drawImage(image, 0, 0, null);
            }
        }
    }    private String w;
    private Image image;
}

Answer 2

if(e.getSource()==save){
    fileDlg=new FileDialog(this,"保存文件",FileDialog.SAVE);
    fileDlg.show();
    fileName=fileDlg.getFile();
    str=ta.getText();
    byteBuf=str.getBytes();
    try{
     FileOutputStream out=new FileOutputStream(fileName);
     out.write(byteBuf);
     out.close();
    }catch(IOException ioe){}
   } 这是保存功能，另存效仿这个就OK了，你自己想一想。

Answer 3

咱只写了awt做的，还没用Swing呢

Answer 4

       if(e.getSource()==save)//保存
         {
            try
            {
                fw=new FileWriter("t102output.txt");//t102output.txt你想要存放的文件名，可以任意。
                fw.write(area.getText());                
                fw.close();
            }catch(Exception  ex)
            {
                ex.printStackTrace();
            }
        }