Update README.md

7cf86790 · Mathias Haage · a7978e7a · 7cf86790
Commit 7cf86790 authored Oct 22, 2016 by Mathias Haage
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Requirements
 This package relies on a number of tools for installation.

 ```
-java
+java 1.8
 maven
 ros
 ```
@@ -20,7 +20,7 @@ For execution

 ```
 jgrafchart
-java
+java 1.8
 python
 bash
 dot (graphviz)