Java tutorial
//package com.java2s; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; public class Main { public static void copyfile(String fromFilePath, String toFilePath, Boolean rewrite) { File fromFile = new File(fromFilePath); File toFile = new File(toFilePath); if (!fromFile.exists() || !fromFile.isFile() || !fromFile.canRead()) { return; } if (!toFile.getParentFile().exists()) { toFile.getParentFile().mkdirs(); } if (toFile.exists() && rewrite) { toFile.delete(); } try { FileInputStream fosfrom = new FileInputStream(fromFile); FileOutputStream fosto = new FileOutputStream(toFile); byte[] bt = new byte[1024]; int c; while ((c = fosfrom.read(bt)) > 0) { fosto.write(bt, 0, c); } fosfrom.close(); fosto.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }