mypadウィジェット
3583 ワード
package menupack;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
class MyMenu
{
private Frame f;
private MenuBar mb;
private Menu fileMenu;
private MenuItem openItem,saveItem,closeItem;
private TextArea ta;
private File ff;
MyMenu()
{
init();
}
private void init()
{
f = new Frame("my frame");
f.setBounds(300,200,600,500);
f.setLayout(new FlowLayout());
mb = new MenuBar();
fileMenu = new Menu(" ");
openItem = new MenuItem(" ");
saveItem = new MenuItem(" ");
closeItem = new MenuItem(" ");
fileMenu.add(openItem);
fileMenu.add(saveItem);
fileMenu.add(closeItem);
mb.add(fileMenu);
ta = new TextArea(28,82);
f.setMenuBar(mb);
f.add(ta);
myEvent();
f.setVisible(true);
}
private void myEvent()
{
openItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
FileDialog open = new FileDialog(f," ",FileDialog.LOAD);
open.setVisible(true);
String dir = open.getDirectory();
String file = open.getFile();
System.out.println(dir+".."+file);
if(dir==null && file==null)
return;
ff = new File(dir,file);
try
{
ta.setText("");
BufferedReader bufr =
new BufferedReader(new FileReader(ff));
String line = null;
while((line=bufr.readLine())!=null)
{
ta.append(line+"\r
");
}
bufr.close();
}
catch (IOException ex)
{
System.out.println("open :"+ex.toString());
}
}
});
saveItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
FileDialog save = new FileDialog(f," ",FileDialog.SAVE);
if(ff==null)
{
save.setVisible(true);
String dir = save.getDirectory();
String file = save.getFile();
System.out.println(dir+"......."+file);
if(dir==null && file==null)
return;
ff = new File(dir,file);
}
try
{
BufferedWriter bufw =
new BufferedWriter(new FileWriter(ff));
String text = ta.getText();
bufw.write(text);
bufw.close();
}
catch (IOException ex)
{
System.out.println("save:"+ex.toString());
}
}
});
closeItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
});
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
}
public static void main(String[] args)
{
new MyMenu();
}
}
/*
1, 。
Main-Class: .
2,jar -cfm demo.jar jar 。
3, , winrar 。
4, jar bin\javaw.exe -jar
*/