--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/io/PushbackInputStream/Available.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,69 @@
+/*
+ * Copyright 1997 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+/* @test
+   @bug 4017414
+   @summary Check for correct implementation of PushbackInputStream.available
+   */
+
+import java.io.*;
+
+
+
+public class Available{
+
+    private static void dotest(PushbackInputStream in , int expected)
+        throws Exception
+    {
+
+        int got = in.available();
+        System.err.println("available must be " + expected + " , got : " + got);
+        if (got != expected) {
+            throw new
+                RuntimeException("Unexpected number of bytes available in the PushBackInputStream");
+        }
+
+    }
+
+
+
+    public static void main(String args[]) throws Exception{
+
+        PushbackInputStream in = new
+            PushbackInputStream(new ByteArrayInputStream(new byte[10]),5);
+
+        dotest(in , 10);
+
+        in.read();
+        dotest(in , 9);
+
+        in.unread(20);
+        dotest(in , 10);
+
+        in.unread(20);
+        dotest(in , 11);
+
+    }
+
+}