I\'m working on MacOS and just starting with react-native.
One of the first steps to get started is to run: react-native run-android or
---- December 2018 --- keep attention ---
React Native does not work with Java versions higher than 8, so you need to uninstall your 9.0.1 version. To do so, execute the following commands:
cd /Library/Java/JavaVirtualMachines/
ls -l
Identify the folder containing your Java Version, then remove it
sudo rm -rf jdk.x.x_xxx.jdk
After that you can download and install java 8 from oracle again. Refer to jdk8 download page