--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/langtools/src/classes/build/tools/symbolgenerator/Probe.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package build.tools.symbolgenerator;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.charset.Charset;
+import java.util.EnumSet;
+
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.JavaFileObject.Kind;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.StandardLocation;
+import javax.tools.ToolProvider;
+
+/**A tool to dump the content of the default javac's bootclasspath. This tool should not use any
+ * features not available on the oldest supported target JDK, which is currently JDK 6.
+ *
+ * For more information on use of this site, please see CreateSymbols.
+ */
+public class Probe {
+
+    public static void main(String... args) throws IOException {
+        if (args.length != 1) {
+            System.err.println("Not enough arguments.");
+            System.err.println("Usage:");
+            System.err.println("    java " + Probe.class.getName() + " <output-file>");
+            return ;
+        }
+
+        File outFile = new File(args[0]);
+        Charset cs = Charset.forName("UTF-8");
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        StandardJavaFileManager fm = compiler.getStandardFileManager(null, null, null);
+        OutputStream out = new FileOutputStream(outFile);
+
+        try {
+            Iterable<JavaFileObject> bcpFiles =
+                    fm.list(StandardLocation.PLATFORM_CLASS_PATH, "", EnumSet.of(Kind.CLASS), true);
+
+            for (JavaFileObject jfo : bcpFiles) {
+                InputStream in = new BufferedInputStream(jfo.openInputStream());
+                try {
+                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                    StringBuilder textual = new StringBuilder();
+                    int read;
+
+                    while ((read = in.read()) != (-1)) {
+                        baos.write(read);
+                        textual.append(String.format("%02x", read));
+                    }
+
+                    textual.append("\n");
+                    out.write(textual.toString().getBytes(cs));
+                } finally {
+                    in.close();
+                }
+            }
+        } finally {
+            out.close();
+        }
+    }
+
+}