If you have tried installing elastic search http://www.elasticsearch.org/ on forge or homestead you probably have run into this error.
Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME
At this point you may want to try installng open jdk. Well don’t. The errors don’t go away.
Instead install oracle java.
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get install oracle-java7-installer
I am not sure why open jdk doesn’t work. If you do know or have made it work please post a comment.