--- a/langtools/make/tools/crules/AssertCheckAnalyzer.java	Mon May 16 13:07:57 2016 +0100
+++ b/langtools/make/tools/crules/AssertCheckAnalyzer.java	Mon May 16 15:41:20 2016 +0200
@@ -37,6 +37,9 @@
 import com.sun.tools.javac.tree.TreeScanner;
 import com.sun.tools.javac.util.Assert;
 
+/**This analyzer guards against complex messages (i.e. those that use string concatenation) passed
+ * to various Assert.check methods.
+ */
 public class AssertCheckAnalyzer extends AbstractCodingRulesAnalyzer {
 
     enum AssertOverloadKind {