--- old/src/share/classes/java/util/zip/CheckedInputStream.java	2013-05-15 22:59:46.287756842 +0400
+++ new/src/share/classes/java/util/zip/CheckedInputStream.java	2013-05-15 22:59:45.735487781 +0400
@@ -86,6 +86,8 @@
         return len;
     }
 
+    private byte[] tmpbuf;
+
     /**
      * Skips specified number of bytes of input.
      * @param n the number of bytes to skip
@@ -93,11 +95,13 @@
      * @exception IOException if an I/O error has occurred
      */
     public long skip(long n) throws IOException {
-        byte[] buf = new byte[512];
+        if (tmpbuf == null) {
+            tmpbuf = new byte[512];
+        }
         long total = 0;
         while (total < n) {
             long len = n - total;
-            len = read(buf, 0, len < buf.length ? (int)len : buf.length);
+            len = read(tmpbuf, 0, len < tmpbuf.length ? (int)len : tmpbuf.length);
             if (len == -1) {
                 return total;
             }