jimage = im2java2d_new(varargin)

    bytearr=img_to_png_bytearr(img)

    img=png_bytearr_to_img(bytes)

    img=print_figure_to_png(hFigure,xros,yros,ifilename);

    %将matlab的figure保存成png图片或者byte数组. 如果填ifilename