import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FileDialog;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JTextArea;
public class dem3 extends JFrame implements ActionListener
{
JPanel jp1, jp2;
JTextArea jTextArea;
JMenuBar jMenubar;
JMenu jMenu;
JMenuItem jm1, jm2;
public static void main(String[] args)
{
// TODO 自动生成的方法存根
dem3 dem3 = new dem3();
}
public dem3()
{
jp1 = new JPanel();
jp2 = new JPanel();
jTextArea = new JTextArea();
jTextArea.setPreferredSize(new Dimension(280, 300));
jMenubar = new JMenuBar();
jMenu = new JMenu("开始");
jm1 = new JMenuItem("打开");
jm2 = new JMenuItem("保存");
jMenu.add(jm1);
jMenu.add(jm2);
jMenubar.add(jMenu);
jm1.addActionListener(this);
jm1.setActionCommand("打开");
jm2.addActionListener(this);
jm2.setActionCommand("保存");
this.add(jp1, BorderLayout.NORTH);
jp1.setLayout(new FlowLayout(FlowLayout.LEFT));
jp1.add(jMenubar);
this.add(jp2, BorderLayout.CENTER);
jp2.add(jTextArea);
this.setSize(300, 400);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e)
{
// TODO 自动生成的方法存根
if (e.getActionCommand() == "打开")
{
FileDialog file_open = new FileDialog(this, "打开文件", FileDialog.LOAD);
file_open.setVisible(true);
FileReader fReader = null;
BufferedReader bReader = null;
try
{
String filepath = file_open.getDirectory() + "//" + file_open.getFile();
fReader = new FileReader(filepath);
bReader = new BufferedReader(fReader);
String str = "";
String strtext = "";
while ((str = bReader.readLine()) != null)
{
strtext = strtext + str + "\r\n";
}
jTextArea.setText(strtext);
} catch (Exception e2)
{
// TODO: handle exception
} finally
{
try
{
bReader.close();
fReader.close();
} catch (IOException e1)
{
// TODO 自动生成的 catch 块
e1.printStackTrace();
}
}
} else
{
FileDialog file_save = new FileDialog(this, "保存文件", FileDialog.SAVE);
file_save.setVisible(true);
FileWriter fWriter = null;
BufferedWriter bWriter = null;
try
{
String strpath = file_save.getDirectory() + "//" + file_save.getFile();
fWriter = new FileWriter(strpath);
bWriter = new BufferedWriter(fWriter);
String strtext = jTextArea.getText();
bWriter.write(strtext);
} catch (Exception e2)
{
// TODO: handle exception
} finally
{
try
{
bWriter.close();
fWriter.close();
} catch (IOException e1)
{
// TODO 自动生成的 catch 块
e1.printStackTrace();
}
}
}
}
}
