sometimes even i can get seriously stressed with some people...
Open source devices are far more versatile than it should... it's their ace. since u're not limited to what the manufacturer want, you can do anything. and java isn't just to mobile games ports... it is another way to do programs, apps AND GAMES to dingoo. the more tools you can use, more the chances do actually do something. java is popular and a little easier than programing on python or c++ in some cases...
And let's face it... it's easier to people improve dingoo in an unexpected way because the user base would like it than they just ignore it because of a single reluctant user.
as a side note... measures converter are little more useful, especially if you uses to read foreign books... in brazil we use celsius, kilograms and metric scales... farnheit, inches, ounces, feets and pound are kinda complicated to manually convert.