### Question:
Paths { public static String renamed(String path, String newName) { return appended(getParentOf(path), newName); }  static String getNameOf(String path); static String getParentOf(String path); static String appended(String path, String child); static String renamed(String path, String newName); static String reparented(String path, String newParentPath); static String relativeIfUnder(String path, String root); static Iterable<String> split(String path); static boolean isParent(String parent, String path); static boolean isParentOrChild(String p1, String p2); static boolean equals(String p1, String p2); static void setCaseSensitive(boolean b); static boolean isCaseSensitive(); static void useSystemCaseSensitivity(); static final char DELIM; }### Answer:
@Test public void testRenaming() { assertEquals("dir/file2", Paths.renamed("dir/file1", "file2")); assertEquals("file2", Paths.renamed("file1", "file2")); assertEquals("/bar", Paths.renamed("/foo", "bar")); }