now you get a file folder in that folder and now you can easily read xml files also. Step 4: It's not any step just copy contents of both folder(in this case both new folder)to the single one. Source:- Android: Getting source code from an APK file.
It was Lewis Nixon who invented the very first sonar-type listening device in 1906. He was seeking a way of detecting icebergs. But the sonar was not invented, its inventor was nobody, but developed through the years. Sonar had very humble beginnings, from crude instruments to advanced technology.
Radar, as an anti-collision system was envisioned as a desirable tool especially after the successful use of radio communications in the Titanic disaster in 1912. Radar became practical because of several inventions happening almost coincidental at the turn of the 19 th century and the beginning of the 20 th century.