# HG changeset patch
# User Jaroslav Tulach <jtulach@netbeans.org>
# Date 1376421571 -7200
# Node ID 3f85884ca049d890c941b123f5f3f80f7cd160ce
# Parent  e3305312184c0e1222cb7590bdd2069346dde288
Prevent running on JDK7 - the WebView implementation on JDK7 is not good enough for CSS animations

diff -r e3305312184c -r 3f85884ca049 spinningcube/src/main/java/org/apidesign/demo/spinningcube/Main.java
--- a/spinningcube/src/main/java/org/apidesign/demo/spinningcube/Main.java	Tue Aug 13 21:11:28 2013 +0200
+++ b/spinningcube/src/main/java/org/apidesign/demo/spinningcube/Main.java	Tue Aug 13 21:19:31 2013 +0200
@@ -36,6 +36,11 @@
     
     /** Launches the browser */
     public static void main(String... args) throws Exception {
+        try {
+            Class.forName("java.lang.FunctionalInterface");
+        } catch (ClassNotFoundException classNotFoundException) {
+            throw new IllegalStateException("This application does not run on JDK7, use at least JDK8");
+        }
         BrowserBuilder.newBrowser().
             loadPage("pages/index.html").
             loadClass(Main.class).