Index: src/main/java/common/javax/swing/text/html/parser/DTD.java =================================================================== --- src/main/java/common/javax/swing/text/html/parser/DTD.java (revision 498993) +++ src/main/java/common/javax/swing/text/html/parser/DTD.java (working copy) @@ -77,7 +77,7 @@ private static void checkName(final String name) { if (name == null) { - throw new IllegalArgumentException("Name must be not null"); + throw new NullPointerException("Name is null"); } }