全国计算机二级考试Java第9章练习题(4)

全国计算机二级考试Java第9章练习题

{

Public void windowClosing (WindowEvent e)

{

System.exit(0);

}

});

ButtonPanel.add(button);

ButtonPanel.add(saveButton);

Frame.getContentPane().add(buttonPanel,BorderLayout.NORTH); Frame.getContentPane().add(textArea,BorderLayout.CENTER);

Frame.setSize(200,200);

Frame.setVisible(true);

}

Public void actionPerformed(ActionEvent event)

{

If(event.getActionCommand().equals(“open”))

{

Dia.showOpenDialog(frame);

Dia.setVisible(true);

File file=dia.getSelectedFilePath();

textArea.append(“path of selected file:”+fileName+”\r\n”);

}

Else if(event.getActionCommand().equals(“save”))

{

Dia.showSaveDialog(frame);

Dia.setVisible(true);

File file=dia.getSelectedFile();