how to delete files in android

public static void deleteFile(File f) {
String[] flist = f.list();
for (int i = 0; i < flist.length; i++) {
File temp = new File(f.getAbsolutePath() + "/" + flist[i]);
if (temp.isDirectory()) {
deleteFile(temp);
temp.delete();
} else {
temp.delete();
}
}
f.delete();
}