running:
phonegap build android
with android SDK and Java SDK installed, I get the following error:
Error: Failed to run "javac -version", make sure that you have a JDK installed. You can get it from: http://www.oracle.com/technetwork/java/javase/downloads.
I have tried adding the "java\jdk-9\bin" to environment variables, and PATH, etc. No luck!
My suspicion is that phonegap is trying to use the runtime version of Java as opposed to the SDK.
I had this problem and I solved it by uninstalling jdk-9 and installing JDK version 8.
Then set up the environment variables where needed (JAVA_HOME & add \bin to Path)