Create report using Jasper report (part 2)

I wrote a part of this subject Create report using Jasper report (part 1) about 2 months ago.Excuse me i wrote it by vietnamse lang .for a long time i didn't come back now i wanna write an article guide you guys to use sub-report by using Jasper report in java but now it's 11h41 pm.too late my moon will kill me. there's quick way.sorry me if you cannot read clear because my english is not good.i wanna to improve it by write some english articles

Hope this help