I have installed 14.4 several times and never ran into a problem specifying the Java JVM.
Every time the path to the JVM is entered it tells me "The provided path does not point to a valid Java Virtual Machine. Please choose again."
Release : 14.4
Component : IdentityMinder(Identity Manager)
Java conflict
Multiple eversions of JAVA on the system which caused a conflict. In this case, two different versions of JAVA installed on the system.
Clean up the Java environment on that machine. Once removed, the proper JAVA environment will install successfully.