Java tutorial
//package com.java2s; //License from project: Apache License import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { public static void copy(InputStream in, OutputStream out) throws IOException { if (!(in instanceof BufferedInputStream)) { in = new BufferedInputStream(in); } if (!(out instanceof BufferedOutputStream)) { out = new BufferedOutputStream(out); } int len = 0; byte[] buffer = new byte[1024]; while ((len = in.read(buffer)) != -1) { out.write(buffer, 0, len); } out.flush(); } }