Java tutorial
//package com.java2s; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; public class Main { public static byte[] getBytes(InputStream in) { try { ByteArrayOutputStream baos = new ByteArrayOutputStream(); byte[] buffer = new byte[8192]; int len = 0; while ((len = in.read(buffer)) != -1) baos.write(buffer, 0, len); in.close(); return baos.toByteArray(); } catch (IOException e) { return null; } } }