src/java.base/share/classes/jdk/internal/jrtfs/JrtFileAttributes.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 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

@@ -22,11 +22,13 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package jdk.internal.jrtfs;
 
+import java.nio.file.attribute.BasicFileAttributes;
 import java.nio.file.attribute.FileTime;
+import java.util.Formatter;
 import jdk.internal.jimage.ImageReader.Node;
 
 /**
  * File attributes implementation for jrt image file system.
  *

@@ -34,11 +36,11 @@
  *
  * It is used internally in the JDK to implement jimage/jrtfs access,
  * but also compiled and delivered as part of the jrtfs.jar to support access
  * to the jimage file provided by the shipped JDK by tools running on JDK 8.
  */
-final class JrtFileAttributes extends AbstractJrtFileAttributes {
+final class JrtFileAttributes  implements BasicFileAttributes {
 
     private final Node node;
 
     JrtFileAttributes(Node node) {
         this.node = node;

@@ -88,16 +90,52 @@
     @Override
     public Object fileKey() {
         return node.resolveLink(true);
     }
 
-    ///////// jrt entry attributes ///////////
-    @Override
+    ///////// jrtfs specific attributes ///////////
+    /**
+     * Compressed resource file. If not available or not applicable, 0L is
+     * returned.
+     *
+     * @return the compressed resource size for compressed resources.
+     */
     public long compressedSize() {
         return node.compressedSize();
     }
 
-    @Override
+    /**
+     * "file" extension of a file resource.
+     *
+     * @return extension string for the file resource
+     */
     public String extension() {
         return node.extension();
     }
+
+    @Override
+    public final String toString() {
+        StringBuilder sb = new StringBuilder(1024);
+        try (Formatter fm = new Formatter(sb)) {
+            if (creationTime() != null) {
+                fm.format("    creationTime    : %tc%n", creationTime().toMillis());
+            } else {
+                fm.format("    creationTime    : null%n");
+            }
+            if (lastAccessTime() != null) {
+                fm.format("    lastAccessTime  : %tc%n", lastAccessTime().toMillis());
+            } else {
+                fm.format("    lastAccessTime  : null%n");
+            }
+            fm.format("    lastModifiedTime: %tc%n", lastModifiedTime().toMillis());
+            fm.format("    isRegularFile   : %b%n", isRegularFile());
+            fm.format("    isDirectory     : %b%n", isDirectory());
+            fm.format("    isSymbolicLink  : %b%n", isSymbolicLink());
+            fm.format("    isOther         : %b%n", isOther());
+            fm.format("    fileKey         : %s%n", fileKey());
+            fm.format("    size            : %d%n", size());
+            fm.format("    compressedSize  : %d%n", compressedSize());
+            fm.format("    extension       : %s%n", extension());
+        }
+        return sb.toString();
+    }
 }