Convert InputStream to Byte Array

Utils.java

public class Utils {

  public static byte[] getBytes(InputStream is) throws IOException {

    int len;
    int size = 1024;
    byte[] buf;

    if (is instanceof ByteArrayInputStream) {
      size = is.available();
      buf = new byte[size];
      len = is.read(buf, 0, size);
    } else {
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      buf = new byte[size];
      while ((len = is.read(buf, 0, size)) != -1)
        bos.write(buf, 0, len);
      buf = bos.toByteArray();
    }
    return buf;
  }


}