diff options
Diffstat (limited to 'libjava/java/io/Writer.java')
| -rw-r--r-- | libjava/java/io/Writer.java | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libjava/java/io/Writer.java b/libjava/java/io/Writer.java index 60939c8..8248c55 100644 --- a/libjava/java/io/Writer.java +++ b/libjava/java/io/Writer.java @@ -1,5 +1,5 @@ /* Writer.java -- Base class for character output streams - Copyright (C) 1998, 1999, 2001, 2003 Free Software Foundation, Inc. + Copyright (C) 1998, 1999, 2001, 2003, 2004 Free Software Foundation, Inc. This file is part of GNU Classpath. @@ -76,10 +76,13 @@ public abstract class Writer * on the specified <code>Object</code>. * * @param lock The <code>Object</code> to use for synchronizing critical - * sections + * sections. Must be not be null. */ protected Writer(Object lock) { + if (lock == null) + throw new NullPointerException(); + this.lock = lock; } |