--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/base/src/java/util/AbstractSet.d	Sat Mar 21 11:33:57 2009 +0100
@@ -0,0 +1,48 @@
+module java.util.AbstractSet;
+
+import java.lang.all;
+import java.util.Set;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.AbstractCollection;
+
+abstract class AbstractSet : AbstractCollection, Set {
+    this(){
+    }
+    equals_t         opEquals(Object o){
+        implMissing( __FILE__, __LINE__ );
+        return 0;
+    }
+    hash_t      toHash(){
+        implMissing( __FILE__, __LINE__ );
+        return 0;
+    }
+    bool        removeAll(Collection c){
+        return super.removeAll(c);
+    }
+    public abstract bool     add(Object o);
+    public abstract bool     add(String o);
+    public abstract bool     addAll(Collection c);
+    public abstract void     clear();
+    public abstract bool     contains(Object o);
+    public abstract bool     contains(String o);
+    public abstract bool     containsAll(Collection c);
+
+
+    public abstract bool     isEmpty();
+    public abstract Iterator iterator();
+    public abstract bool     remove(Object o);
+    public abstract bool     remove(String o);
+    public abstract bool     removeAll(Collection c);
+    public abstract bool     retainAll(Collection c);
+    public abstract int      size();
+    public abstract Object[] toArray();
+    public abstract Object[] toArray(Object[] a);
+    public abstract String   toString(){
+        return super.toString();
+    }
+
+    // only for D
+    public abstract int opApply (int delegate(ref Object value) dg);
+}
+