diff -r 000000000000 -r 716af5f2ebd1 samples/messagedigest/src-new-api/org/apidesign/api/security/Digest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/messagedigest/src-new-api/org/apidesign/api/security/Digest.java	Sat Jun 14 09:52:23 2008 +0200
@@ -0,0 +1,44 @@
+
+package org.apidesign.api.security;
+
+import java.nio.ByteBuffer;
+import org.apidesign.impl.security.friendapi.DigestImplementation;
+import org.apidesign.impl.security.friendapi.DigestProvider;
+import java.util.ServiceLoader;
+
+/** MessageDigest extends MessageDigestSpi, that means the javadoc
+ *
+ * @author Jaroslav Tulach
+ */
+// BEGIN: day.end.bridges.Digest
+public final class Digest {
+    private final DigestImplementation impl;
+    
+    /** Factory method is better than constructor */
+    private Digest(DigestImplementation impl) {
+        this.impl = impl;
+    }
+    
+    /** Factory method to create digest for an algorithm.
+     */
+    public static Digest getInstance(String algorithm) {
+        for (DigestProvider dp : ServiceLoader.load(DigestProvider.class)) {
+            DigestImplementation impl = dp.create(algorithm);
+            if (impl != null) {
+                return new Digest(impl);
+            }
+        }
+        throw new IllegalArgumentException(algorithm);
+    }
+      
+    //
+    // these methods are kept the same as in original MessageDigest,
+    // but for simplicity choose just some from the original API
+    //
+    
+    public byte[] digest(ByteBuffer bb) {
+        impl.update(bb);
+        return impl.digest();
+    }
+}
+// END: day.end.bridges.Digest