1. Read headers with input.readLine();
2. Skip 2 empty lines "\r\n\r\n"
3. Read body while line.length() != 0.

So the format could look like:

Header1\r\n Header2\r\n Header3\r\n\r\n BODY BODY BODY... 

1. Read headers with input.readLine();
2. Skip 2 empty lines "\r\n\r\n"
3. Read body while line.length() != 0.

So the format could look like:

Header1\r\n Header2\r\n Header3\r\n\r\n BODY BODY BODY... 

Another option is to use com.sun.net.httpserver.HttpServer