I've documented my first attempt at using OSC communication between Max and Processing here: 

http://www.conceptualinertia.net/aoakenfo/sketch-1

I hope it helps other beginners out there.

I've documented my first attempt at using OSC communication between Max and Processing here: http://www.conceptualinertia.net/aoakenfo/sketch-1

beginner-tut-max-osc-processing

even though it was posted 4 years ago, it really does work.

Been working with the example ASH posted 

When I copy-paste the finished example, everything works smoothly. But there is a little bit too much going on with the processing side of the code for me to know exactly where I should pull from to create the building blocks of my own Max~Processing OSC communication project.

So naturally, I am trying to start from square one, with the first portion of the example, where the goal is to simply send the message '42' via the /foo prepend. For some reason it's not working for me.

### [2015/5/29 2:5:41] PROCESS @ OscP5 stopped.

### [2015/5/29 2:5:41] PROCESS @ UdpClient.openSocket udp socket initialized.

### [2015/5/29 2:5:42] PROCESS @ UdpServer.start() new Unicast DatagramSocket created @ port 8080

### [2015/5/29 2:5:42] PROCESS @ UdpServer.run() UdpServer is running @ 8080

### [2015/5/29 2:5:42] INFO @ OscP5 is running. you (192.168.0.7) are listening @ port 8080

### [2015/5/29 2:5:42] PROCESS @ OscPlug plugging class sketch_150529b | addrPattern:/foo typetag:i method:foo

OscP5 0.9.9 infos, comments, questions at 

### [2015/5/29 2:5:42] PROCESS @ OscP5 stopped.

### [2015/5/29 2:5:42] PROCESS @ UdpClient.openSocket udp socket initialized.

### [2015/5/29 2:5:43] ERROR @ UdpServer.start() IOException, couldnt create new DatagramSocket @ port 8080 java.net.BindException: Address already in use

### [2015/5/29 2:5:43] INFO @ OscP5 is running. you (192.168.0.7) are listening @ port 8080

### [2015/5/29 2:5:43] PROCESS @ OscP5 stopped.

### [2015/5/29 2:5:43] PROCESS @ UdpServer.run() socket closed.

________________________________________________________________________________________

myRemoteLocation = new NetAddress("127.0.0.1",8080);

myRemoteLocation = new NetAddress("127.0.0.1", 8080);

___________________________________________________________________________________

I have tried restarting, changing the ip, changing the port, all to which returns the same results. I have also looked at the send receive example in the oscP5 but to no avail. Comparing my source code with the finished example source code and nothing jumps out. I know that OSC communication works with my setup because both the finished example from ASH and the oscP5sendreceive example work.

Been working with the example ASH posted  http://www.conceptualinertia.net/aoakenfo/sketch-1

So naturally, I am trying to start from square one, with the first portion of the example, where the goal is to simply send the message '42' via the /foo prepend. For some reason it's not working for me. 

### [2015/5/29 2:5:41] PROCESS @ OscP5 stopped.
### [2015/5/29 2:5:41] PROCESS @ UdpClient.openSocket udp socket initialized.
### [2015/5/29 2:5:42] PROCESS @ UdpServer.start() new Unicast DatagramSocket created @ port 8080
### [2015/5/29 2:5:42] PROCESS @ UdpServer.run() UdpServer is running @ 8080
### [2015/5/29 2:5:42] INFO @ OscP5 is running. you (192.168.0.7) are listening @ port 8080
### [2015/5/29 2:5:42] PROCESS @ OscPlug plugging class sketch_150529b | addrPattern:/foo typetag:i method:foo
OscP5 0.9.9 infos, comments, questions at http://www.sojamo.de/oscP5

### [2015/5/29 2:5:42] PROCESS @ OscP5 stopped.
### [2015/5/29 2:5:42] PROCESS @ UdpClient.openSocket udp socket initialized.
### [2015/5/29 2:5:43] ERROR @ UdpServer.start()  IOException, couldnt create new DatagramSocket @ port 8080 java.net.BindException: Address already in use
### [2015/5/29 2:5:43] INFO @ OscP5 is running. you (192.168.0.7) are listening @ port 8080
### [2015/5/29 2:5:43] PROCESS @ OscP5 stopped.
### [2015/5/29 2:5:43] PROCESS @ OscP5 stopped.
### [2015/5/29 2:5:43] PROCESS @ UdpServer.run()  socket closed.

________________________________________________________________________________________
This is my source code

OscP5 oscP5;
NetAddress myRemoteLocation;

void setup() {
  size(400,400);
  frameRate(25);

  oscP5 = new OscP5(this,8080);
  myRemoteLocation = new NetAddress("127.0.0.1",8080);
}

void initOsc(){
  oscP5 = new OscP5(this, 8080);
  myRemoteLocation = new NetAddress("127.0.0.1", 8080);
  oscP5.plug(this, "foo", "/foo");
}

public void foo(int value){
  println("int received! =" + value);
}

I answered this question on a different thread. It's probably cleaner to ask your question in one, new thread -- with links -- rather than in multiple places.

beginner tut Max -> OSC -> Processing