Search what APKs you have installed on your device
$ adb shell 'pm list packages -f' | grep /data/app/com.chicago
package:/data/app/com.chicagoandroid.cit299.week7.bookshelf-1.apk...
package:/data/app/com.chicagoandroid.cit299.naturesounds.appnaturesounds-1.apk...
package:/data/app/com.chicagoandroid.cit299.simplecamera-2.apk...
Uninstall APK by the package you found above.
$ adb uninstall com.your_package
$ adb uninstall com.chicagoandroid.cit299.week7.bookshelf
Success
Install APK
in this example I am using created my Maven (mvn install), but you can use APK in the auto-generated build folder e.g.:
CIT299/appNatureSounds/build/outputs/apk/appNatureSounds-debug-unaligned.apk