export JAVA_HOME=/Applications/Android\ Studio\ 4.2.0.app/Contents/jre/jdk/Contents/Home export PATH=${PATH}:$JAVA_HOME/bin export ANDROID_HOME=/Users/$USER/Library/Android/sdk export PATH=${PATH}:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools

Set up adb on Mac OS X

https://mkyong.com/java/how-to-install-java-on-mac-osx/