Java tutorial
//package com.java2s; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; public class Main { public static byte[] getByteArray(InputStream is) throws IOException { ByteArrayOutputStream buffer = new ByteArrayOutputStream(); int nRead; byte[] data = new byte[16384]; while ((nRead = is.read(data, 0, data.length)) != -1) { buffer.write(data, 0, nRead); } buffer.flush(); return buffer.toByteArray(); } }