You need to set JDK path in config file.
See below the path that should be something like this..
C:\Program Files (x86)\Jaspersoft\iReport-5.5.0\etc
In the ‘etc’ folder you will find the config file where you have to set the jdkhome like this (jdkhome=”C:\\Program Files\\Java\\jdk1.8″ ).And you have to give jdk path not jre. Do check you have installed jdk.However your mentioned path does not show that to me.
The same question had been asked before and was answered. I would recommend you to first search your question or query before asking so you may not need to wait for the answer.