TROUBLESHOOTING: Unable t o create an instance of the Java Virtual Machine Located at path: ... jre\bin\client\jvm.dll

This is happening when you click to start JDeveloper. It throws this error and fails to start it.

Reason: 

The amount of RAM allocated for JDeveloper's JVM is more than your system can provide and as a result JDeveloper will not start.

Solution:
Reduce the RAM. Check my previous blog post "TROUBLESHOOTING: "Low Memory Warning" of JDeveloper or How to tweak memory settings." on how to do it