diff -r 000000000000 -r 959103a6100f src/share/classes/com/sun/tools/javac/file/FSInfo.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/classes/com/sun/tools/javac/file/FSInfo.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,94 @@
+
+package com.sun.tools.javac.file;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.StringTokenizer;
+import java.util.jar.Attributes;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
+
+import com.sun.tools.javac.util.Context;
+
+/**
+ * Get meta-info about files. Default direct (non-caching) implementation.
+ * @see CacheFSInfo
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own risk.
+ * This code and its internal interfaces are subject to change or
+ * deletion without notice.</b>
+ */
+public class FSInfo {
+
+    /** Get the FSInfo instance for this context.
+     *  @param context the context
+     *  @return the Paths instance for this context
+     */
+    public static FSInfo instance(Context context) {
+        FSInfo instance = context.get(FSInfo.class);
+        if (instance == null)
+            instance = new FSInfo();
+        return instance;
+    }
+
+    protected FSInfo() {
+    }
+
+    protected FSInfo(Context context) {
+        context.put(FSInfo.class, this);
+    }
+
+    public File getCanonicalFile(File file) {
+        try {
+            return file.getCanonicalFile();
+        } catch (IOException e) {
+            return file.getAbsoluteFile();
+        }
+    }
+
+    public boolean exists(File file) {
+        return file.exists();
+    }
+
+    public boolean isDirectory(File file) {
+        return file.isDirectory();
+    }
+
+    public boolean isFile(File file) {
+        return file.isFile();
+    }
+
+    public List<File> getJarClassPath(File file) throws IOException {
+        String parent = file.getParent();
+        JarFile jarFile = new JarFile(file);
+        try {
+            Manifest man = jarFile.getManifest();
+            if (man == null)
+                return Collections.emptyList();
+
+            Attributes attr = man.getMainAttributes();
+            if (attr == null)
+                return Collections.emptyList();
+
+            String path = attr.getValue(Attributes.Name.CLASS_PATH);
+            if (path == null)
+                return Collections.emptyList();
+
+            List<File> list = new ArrayList<File>();
+
+            for (StringTokenizer st = new StringTokenizer(path); st.hasMoreTokens(); ) {
+                String elt = st.nextToken();
+                File f = (parent == null ? new File(elt) : new File(parent, elt));
+                list.add(f);
+            }
+
+            return list;
+        } finally {
+            jarFile.close();
+        }
+    }
+}