JFileChooser和 JTextArea的问题

[gaofeng9339]

请问一下JFileChooser怎么用的 它的文件过滤怎么写
JTextArea 里面的内容怎么得到 然后生成文件

[hero222]

to 搂主：这是我以前写的一个例子程序，你自己看吧！

package swingstudy.swing;

import javax.swing.JPanel;
import javax.swing.JScrollPane;
import java.awt.TextArea;
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JFileChooser;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.File; ?
import java.io.*;

/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2006</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class fileChooserDemo implements ActionListener {
JScrollPane panelConten=new JScrollPane();
TextArea txtArea=new TextArea();
JFrame frame=new JFrame();
JPanel panelButton=new JPanel();
JButton fileOpen=new JButton("打開");
JButton fileSave=new JButton("保存");
FileReader reader;
FileWriter writer;
JFileChooser fileChooser;
public fileChooserDemo() {
init();
}
public void init(){
frame.setLayout(new BorderLayout());

//============panelConten===========
{
panelConten.setPreferredSize(new Dimension(200, 100));
panelConten.setViewportView(txtArea);
}
frame.add(panelConten,BorderLayout.CENTER);
//============panelButton==========={
{
panelButton.setLayout(new FlowLayout(FlowLayout.RIGHT));
fileOpen.setPreferredSize(new Dimension(80, 25));
fileOpen.addActionListener(this);
panelButton.add(fileOpen);
fileSave.setPreferredSize(new Dimension(80, 25));
fileSave.addActionListener(this);
panelButton.add(fileSave);
}
frame.add(panelButton,BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args){
new fileChooserDemo();

}

public void actionPerformed(ActionEvent e) {
if(e.getSource()==fileOpen){
System.out.println("===================");
fileChooser=new JFileChooser();
fileChooser.showOpenDialog(frame);

if(fileChooser.getSelectedFile()!=null){
File file = fileChooser.getSelectedFile();
char[] input=new char[(int)file.length()];

try {
reader = new FileReader(file);
reader.read(input);
StringBuffer conent=new StringBuffer();
for(int i=0;i<input.length;i++){
conent.append(input[i]);
}
txtArea.setText(conent.toString());
} catch (IOException ex) {
}
}else{
System.out.println("Error");
}
}

}
}

[candy84]

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[candy84]

我的站也不错哟,有很多值得你看的哟,
来踩一下呀,
http://bbs.oneedu.cn/bbs

[gaofeng9339]

非常好