William Desportes authored Mar 01, 2018 and Bastien Le Querrec committed Mar 07, 2018

SDK_INT is never <9 because minSdkVersion 9
StringBuffer replaced by StringBuilder
Explicit manual boxing is unnecessary under Java 5 and newer
`while` loops replaced by foreach
`for i` replaced by foreach
Inlined some variables
Missing supercall fix

Closes #664