how to change pdf line width by Itext?

问题

I have a requirement , i hava some pdf files ,and there are a lot of lines in the pdf, but the line is very thin about 0.02mm, i would like to change line width from 0.02 to 0.1 ， is it possible in itext?

thanks a lot

来源：https://stackoverflow.com/questions/58990692/how-to-change-pdf-line-width-by-itext