driver.java

Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套 代码

import java.io.*;
import javax.swing.JFrame;

/** Program to write to a new binary file, called example.obj  (Figure 13.25)
 *  This file stores a single AWindow object.
 *  Author: David Riley
 *  Date: January, 2005
 */
public class Driver  {
	public Driver()   {
		JFrame window;
		Oval dot;
		window = new JFrame("Persistant Objects"); 
		window.setBounds(10, 10, 300, 200);
		window.setVisible(true);
		window.setLayout(null);
		dot = new Oval(125, 75, 50, 50);
		window.add(dot, 0);
		window.repaint();
    
		try{
			FileOutputStream outStream;
			ObjectOutputStream objStream;	
			outStream = new FileOutputStream( "example.obj" );
			objStream = new ObjectOutputStream( outStream );
			objStream.writeObject( window );
			objStream.writeObject( dot );
			objStream.flush();
			objStream.close();
		}
		catch (IOException e)  {
			System.out.println("ERROR writing." );
		}
	}
}