比较急把下面的C#转换成Java，多谢

public class ImageCropper extends IHttpHandler{    public void ProcessRequest(HttpContext context)    {        String ImgPath = Convert.ToString(context.Request["p"]);        int PointX = Convert.ToInt32(context.Request["x"]);        int PointY = Convert.ToInt32(context.Request["y"]);        int CutWidth = Convert.ToInt32(context.Request["w"]);        int CutHeight = Convert.ToInt32(context.Request["h"]);        int PicWidth = Convert.ToInt32(context.Request["pw"]);        int PicHeight = Convert.ToInt32(context.Request["ph"]);        context.Response.ContentType = "image/jpeg";        ShowImage(HttpContext.Current.Server.MapPath(ImgPath), PointX, PointY, CutWidth, CutHeight, PicWidth, PicHeight).WriteTo(context.Response.OutputStream);    }    private MemoryStream ShowImage(String path, int PointX, int PointY, int CutWidth, int CutHeight, int PicWidth, int PicHeight)    {        Image image = Image.FromFile(path);        BeanMap bm = new Bitmap(CutWidth, CutHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);        Graphics graphics = Graphics.FromImage(bm);        graphics.DrawImage(image, new Rectangle(0, 0, CutWidth, CutHeight), PointX * image.Width / PicWidth, PointY * image.Height / PicHeight, CutWidth * image.Width / PicWidth, CutHeight * image.Height / PicHeight, GraphicsUnit.Pixel);        int a = path.LastIndexOf('.');        int b = path.LastIndexOf('\\');        string _newPic = path.Substring(0, b) + "\\new_" + DateTime.Now.ToFileTimeUtc().ToString("X") + ".jpg";        bm.Save(_newPic, System.Drawing.Imaging.ImageFormat.Jpeg);        MemoryStream ms = new MemoryStream();        bm.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);        image.Dispose();        graphics.Dispose();        bm.Dispose();        return ms;    }    public bool IsReusable    {        get        {            return false;        }    }}