文件栏编程

最新推荐文章于 2025-08-09 08:00:00 发布

原创最新推荐文章于 2025-08-09 08:00:00 发布 · 474 阅读

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import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class text {
public static void main (String args[]){
  final Frame frame = new Frame();
  frame.setSize(400,400);
  frame.setLocation(100,100);
  final TextArea ta = new TextArea();
  frame.add(ta);
  Menu mu = new Menu("File");
  MenuBar bar = new MenuBar();
  MenuItem me1 = new MenuItem("Exit");
  me1.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent e){
    System.exit(0);
   }
  });
  MenuItem me2 = new MenuItem("Open");
  me2.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent e){
    FileDialog fg = new FileDialog(frame,"hulei Open",FileDialog.LOAD);
    fg.setVisible(true);
    String file = fg.getDirectory()+fg.getFile();
    if(file!=null)
    {   try{
     FileInputStream fis = new FileInputStream(file);
     byte[] bye = new byte[10*1024];
     int len = fis.read(bye);
     ta.append(new String(bye,0,len));
     fis.close();
        }catch(Exception ex){
           ex.printStackTrace();
        }
    }
   }
  });
  mu.add(me2);
  mu.add(me1);
  bar.add(mu);
  frame.setMenuBar(bar);
  frame.addWindowListener(new MyWindow());
  frame.setVisible(true);
  }
}
class MyWindow extends WindowAdapter{
public void windowClosing(WindowEvent e){
   System.exit(0);
}
}