src/jdk.jdeps/share/classes/com/sun/tools/jdeprscan/Pretty.java

@@ -147,10 +147,11 @@
                 name = "double";
                 break;
             case 'V':
                 name = "void";
                 break;
+            case 'Q':
             case 'L':
                 int semi = desc.indexOf(';', pos);
                 if (semi == -1) {
                     return null;
                 }