If you are getting the following error while running npx cap run android
> Could not find tools.jar. Please check that /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home contains a valid JDK installation.
then you need to follow the following steps to fix that issue:
Install JDK. The steps ccould be different for your machine. You can follow https://www.oracle.com/java/technologies/downloads/#java8 for other versions.
RUn the echo $JAVA_HOME to get the JDK path
Output will be like this:
Open gradle.properties file present in android folder in your Ionic project.
Add the following line to the last of that file:
The jdk1.8.0_331.jd folder could be different depending upon your JDK location.
Running npx cap run android again will work and will launch your Andoird simulator.