album.java

用JAVA编写的电子像册。比较使用！用记事本打开方式就可以打开了！

import java.awt.*;
import java.applet.*;
import java.io.*;

public class Album extends Applet
{
	private Choice C1;
	private String S1[],S2[];
	private int totalPics;
	private Image offI,img[];
	private Graphics offG;
	private MediaTracker imagetracker;
  
	public void init()
	{
		this.setLayout(null);
		C1 = new Choice();
		C1.setBounds(10,10,290,20);
		totalPics = Integer.parseInt(getParameter("TotalPic"));
		System.out.println(totalPics);
		S1 = new String[totalPics];
		S2 = new String[totalPics];
		img = new Image[totalPics];
		for(int i=0; i<totalPics; i++)
		{
			S1[i] = new String("");
			S2[i] = new String("");
		}
		String s = new String("");
		imagetracker = new MediaTracker(this);
		for(int i=0; i<totalPics; i++)
		{
			s = getParameter("Text" + (i+1));  
			S1[i] = s;
			System.out.println(S1[i]);
			C1.addItem(s);
			s = getParameter("Picture" + (i+1));  
			S2[i] = s;
			img[i] = getImage(getDocumentBase(), s);
			imagetracker.addImage(img[i],0);
			System.out.println(S2[i]);
		}
		try
		{
			imagetracker.waitForID(0);
		}
		catch(InterruptedException e)
		{
		
		}
		add(C1);
		offI = createImage(size().width,size().height-40);
		offG = offI.getGraphics();
	}
  
	public void paint(Graphics g)
	{
		g.drawImage(offI,10,40,this);
	}

	public boolean action(Event e , Object o)
	{
		if(e.target == C1)
		{
			String s = new String("");
			offG.setColor(this.getBackground());
			offG.fillRect(0,40,size().width,size().height-40);
			offI = img[C1.getSelectedIndex()];
			offG.drawImage(offI,0,0,this);
			repaint();
		}
		return true;
	}
}