The simple way to do that is by command
adb install example.apk
and if you want to target connect device you can add parameter " -d "
adb install -d example.apk
if you have more than one device/emulator connected you will get this error
adb: error: connect failed: more than one device/emulator
- waiting for device - error: more than one device/emulator
to avoid that you can list all devices by below command
adb devices
you will get results like below
C:\Windows\System32>adb devices
List of devices attached
a3b09hh3e device
emulator-5334 device
chose one of these devices and add parameter to adb command as " -s a3b09hh3e " as below
adb -s a3b09a6e install example.apk
also as a hint if the path of the apk long and have a spaces, just add it between double quotes like
adb -s a3b09a6e install "c:\my apk location\here 123\example.apk"