批量转换bmp文件为jpg

package image;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import javax.imageio.ImageIO;

public class Bmp2Jpeg{
	public static ArrayList<File> getFiles(File dir) {
		ArrayList files = new ArrayList<File>();
		File list[] = dir.listFiles();
		for (int i = 0; i < list.length; i++) {
			if (list[i].isDirectory()) {
				System.out.println("ignore directory");
			} else if (!(list[i].getName().endsWith(".bmp") || list[i].getName().endsWith(".BMP"))) {
				System.out.println("ignore not bmp file :" + list[i].getName());
			} else if (list[i].isFile()) {
				files.add(list[i]);
			}
		}
		return files;
	}

	public static void main(String[] args) {
		File f1 = new File(args[0]);
		ArrayList<File> files = getFiles(f1);
		for (File file : files) {
			try {
				BufferedImage bi = ImageIO.read(file);
				String s = File.separator + file.getName().substring(0, file.getName().length() - 4) + ".jpg";
				File f2 = new File(args[1] + s);
				ImageIO.write(bi, "jpeg", f2);
			} catch (IOException e) {
				e.printStackTrace();
			}
			System.out.println("/********\n" + file.getName() + " is dealed!");
		}
	}
}