I'm using the miscutil library to communicate between and Java and C# application using a socket. I am trying to figure out the difference between the following code (this is Groovy, but the Java result is the same):

import java.io.*

def baos = new ByteArrayOutputStream();
def stream = new DataOutputStream(baos);
stream.writeInt(5000)

baos.toByteArray().each { println it }

/* outputs - 0, 0, 19, -120 */

and C#:

using (var ms = new MemoryStream())
using (EndianBinaryWriter writer = new EndianBinaryWriter(EndianBitConverter.Big, ms, Encoding.UTF8))
{
  writer.Write(5000);
  ms.Position = 0;
  foreach (byte bb in ms.ToArray())
  {
    Console.WriteLine(bb);
  }
}

/* outputs - 0, 0, 19, 136 */

As you can see, the last byte is -120 in the Java version and 136 in C#.