Date: 2012oct17 Updated 2025jan9 Language: Java Code: indented Q. Java: How can I do a "touch" in Java? A. Our touch() function is at the bottom of this page. It uses a few helper functions. boolean setModifyTimeNow(String filename) { File file = new File(filename); return file.setLastModified(System.currentTimeMillis()); } boolean makeEmptyFile(String filename) { try { OutputStream out = new FileOutputStream(new File(filename)); out.close(); return true; } catch(IOException e) { return false; } } boolean isExists(String filename) { if (filename == null) return false; File file = new File(filename); return file.exists(); } boolean touch(String filename) { if (isExists(filename)) { return setModifyTimeNow(filename); } else { return makeEmptyFile(filename); } }