java: Added [Interesting] delimiters for snippets of code to be inserted in the documentation

Signed-off-by: Stefan Andritoiu <stefan.andritoiu@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/java/MY9221Sample.java

@@ -34,7 +34,8 @@ public class MY9221Sample{
 	}
 	
 	public static void main(String[] args) throws InterruptedException {
-		// Instantiate a Grove LED Bar, with Data pin D8 and Clock pin D9
+		//! [Interesting]
+        // Instantiate a Grove LED Bar, with Data pin D8 and Clock pin D9
 		upm_my9221.MY9221 bar = new upm_my9221.MY9221((short) 8, (short) 9);
 	
 		while (true) {
@@ -43,6 +44,7 @@ public class MY9221Sample{
 				Thread.sleep(100);
 			}
 		}
+        //! [Interesting]
 	}
 	
-}
+}