Java tutorial
//package com.java2s; import java.io.File; import android.util.Log; public class Main { public static boolean updateFile(String path, String filename) { File f = new File(path, filename); Log.e("x", f.getAbsolutePath()); Log.e("x", "" + f.exists()); long fileTime = f.lastModified(); long curTime = System.currentTimeMillis(); long fileAge = curTime - fileTime; Log.d("updateFile", "fileTime: " + fileTime); Log.d("updateFile", "curTime: " + curTime); Log.d("updateFile", "fileage: " + fileAge); // return true if file is older than an hour return fileAge > (1000 * 60 * 60); } }