--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/io/RandomAccessFile/SetLength.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,82 @@
+/*
+ * 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
+   @summary General tests of the setLength method -- Should migrate to 1.2 JCK
+ */
+
+import java.io.*;
+
+
+public class SetLength {
+
+    static void fail(String s) {
+        throw new RuntimeException(s);
+    }
+
+    static void go(File fn, int max) throws IOException {
+        int chunk = max / 4;
+        long i;
+        RandomAccessFile f;
+
+        f = new RandomAccessFile(fn, "rw");
+        f.setLength(2 * chunk);
+        if (f.length() != 2 * chunk) fail("Length not increased to " + (2 * chunk));
+        if ((i = f.getFilePointer()) != 0) fail("File pointer shifted to " + i);
+        byte[] buf = new byte[max];
+        f.write(buf);
+        if (f.length() != max) fail("Write didn't work");
+        if (f.getFilePointer() != max) fail("File pointer inconsistent");
+        f.setLength(3 * chunk);
+        if (f.length() != 3 * chunk) fail("Length not reduced to " + 3 * chunk);
+        if (f.getFilePointer() != 3 * chunk) fail("File pointer not shifted to " + (3 * chunk));
+        f.seek(1 * chunk);
+        if (f.getFilePointer() != 1 * chunk) fail("File pointer not shifted to " + (1 * chunk));
+        f.setLength(2 * chunk);
+        if (f.length() != 2 * chunk) fail("Length not reduced to " + (2 * chunk));
+        if (f.getFilePointer() != 1 * chunk) fail("File pointer not shifted to " + (1 * chunk));
+        f.close();
+    }
+
+    public static void main(String[] args) throws IOException {
+        File fn = new File("x.SetLength");
+        try {
+            go(fn, 20);
+            fn.delete();
+            go(fn, 64 * 1024);
+            RandomAccessFile f = new RandomAccessFile(fn, "r");
+            boolean thrown = false;
+            try {
+                f.setLength(3);
+            } catch (IOException x) {
+                thrown = true;
+            }
+            if (!thrown) fail("setLength succeeded on a file opened read-only");
+            f.close();
+        }
+        finally {
+            fn.delete();
+        }
+    }
+
+}