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For find extension from a given path you can use any one from given solution: Method 1: Get extension from string path String path = "/storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20190125-WA0010.mp4"; String extension = path.substring(path.lastIndexOf("."));   Method ...

Problem: xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun This error shows on the terminal when you update or new install macOS Mojave. This error means your system does not have installed Xcode-select Developer ...