Server is not connected. Deploy is not available. IntelliJ 13 and Tomcat 7

Question

Trying to run my app with IntelliJ 13 and Apache tomcat 7.0.42. JDK1.6

Always getting the error Artifact app:war exploded: Server is not connected. Deploy is

Answer 1

tomcat-7.0-doc RUNNING

(3.2) Set JRE_HOME or JAVA_HOME (required)

These variables are used to specify location of a Java Runtime Environment or of a Java Development Kit that is used to start Tomcat.

The JRE_HOME variable is used to specify location of a JRE. The JAVA_HOME variable is used to specify location of a JDK.

Using JAVA_HOME provides access to certain additional startup options that are not allowed when JRE_HOME is used.

If both JRE_HOME and JAVA_HOME are specified, JRE_HOME is used.