I had same issue and resolved it by moving back to JDK1.7.0 instead of java 8.
Here https://community.jboss.org/message/808212 you can find thread about running JBoss AS 7 on java 8.
Symptoms there look similar.
Thanks! This works for me.
I was using JDK 1.8.. and I changed to JDF 1.7
Thanks a lot of!