通过JAVA程序打开文本

import java.awt.*; import java.awt.event.*; import java.io.*; import javax.swing.*; public class Jfilechooser extends JFrame implements ActionListener { //=================================================== JButton button; JTextArea text; JTextPane textpane; FileInputStream readfile; JScrollPane scroll; Container con; JFileChooser chooser=new JFileChooser(); //========================================== public Jfilechooser() { super("有文件选择器的窗口"); button=new JButton("打开文件选择器"); button.addActionListener(this); textpane=new JTextPane(); scroll=new JScrollPane(textpane); setSize( new Dimension(400,400)); setVisible(true); con=getContentPane(); con.add(button,BorderLayout.NORTH); con.add(scroll,BorderLayout.CENTER); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { dispose();System.exit(0);}}); } //==================================================== public void actionPerformed(ActionEvent e) { if(e.getSource()==button) { String s; int state =chooser.showOpenDialog(null); File file=chooser.getSelectedFile(); if( file != null && state==JFileChooser.APPROVE_OPTION) { try{ readfile=new FileInputStream(file); textpane.read(readfile,this); } catch(IOException e1) { e1.printStackTrace(); } } } } //====================================================== } -------------------------------------------------------------------------------------------------- import java.awt.*; import java.awt.event.*; import java.io.*; import javax.swing.*; class Jfilechooser extends JFrame implements ActionListener { //=================================================== JButton button; JTextArea text; JTextPane textpane; FileInputStream readfile; JScrollPane scroll; JFileChooser chooser=new JFileChooser(); JPanel con; //========================================== public Jfilechooser() { super("有文件选择器的窗口"); button=new JButton("打开文件选择器"); button.addActionListener(this); textpane=new JTextPane(); scroll=new JScrollPane(textpane); //setSize( new Dimension(400,400)); //setVisible(true); con=(JPanel)this.getContentPane(); con.add(button,BorderLayout.NORTH); con.add(scroll,BorderLayout.CENTER); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { dispose();System.exit(0);}}); } //==================================================== public void actionPerformed(ActionEvent e) { if(e.getSource()==button) { String s; int state =chooser.showOpenDialog(null); File file=chooser.getSelectedFile(); if( file != null && state==JFileChooser.APPROVE_OPTION) { try{ readfile=new FileInputStream(file); textpane.read(readfile,this); } catch(IOException e1) { e1.printStackTrace(); } } } } //====================================================== } public class mywindow { public static void main(String args[]) { Jfilechooser win=new Jfilechooser(); win.setSize( new Dimension(400,400)); win.pack(); win.validate

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