Problem with building Bluetooth project

I get this error when I try and build my project.

C:\School\Year4\Tech Project\Programs\Bluetooth\FuelFinderBT.java:91: constant expression required
            case SERVER_PORT: {
                 ^
1 error
Error!: Error: java compiler failed: javac -source 1.3 -target 1.1 -g -O -d C:\DOCUME~1\Chris\LOCALS~1\Temp\rapc_53dd4af3.dir -bootclass ...

I can't figure out what it means. I even re wrote it to match a smaple from that comes with JDE 4.1

This is the code that has the error:

switch(id)
        {
            case SERVER_PORT: {
                //Push a new SPPScreen onto the display stack and pop the existing menu
                pushScreen( new SPPScreen(null) );
                popScreen(myScreen);
                return;
            }
           
            default:
                if( cookie instanceof Runnable ) {
                   ((Runnable)cookie).run();
                }
            break;
        }

How can I fix this problem?