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import java.io.File;
import java.text.DecimalFormat;
import java.io.FileInputStream;
public class GetFileSize
{
    public long getFileSizes(File f) throws Exception{//È¡µÃÎļþ´óС
        long s=0;
        if (f.exists()) {
            FileInputStream fis = null;
            fis = new FileInputStream(f);
           s= fis.available();
        } else {
            f.createNewFile();
            System.out.println("Îļþ²»´æÔÚ");
        }
        return s;
    }
    // µÝ¹é
    public long getFileSize(File f)throws Exception//È¡µÃÎļþ¼Ð´óС
    {
        long size = 0;
        File flist[] = f.listFiles();
        for (int i = 0; i < flist.length; i++)
        {
            if (flist[i].isDirectory())
            {
                size = size + getFileSize(flist[i]);
            } else
            {
                size = size + flist[i].length();
            }
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