Java tutorial
//package com.java2s; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { private static int copy(InputStream input, OutputStream output) throws IOException { byte[] buffer = new byte[1024 * 4]; int count = 0; int n = 0; while (-1 != (n = input.read(buffer))) { output.write(buffer, 0, n); count += n; } return count; } }