To work with the local node, you need to get the local ClusterGroup:

public class LocalNodes {
 public static void main(String[] args) {
     IgniteConfiguration cfg = new IgniteConfiguration();
     cfg.setPeerClassLoadingEnabled(true);
         try (Ignite ignite = Ignition.start(cfg)) {
             IgniteCluster cluster = ignite.cluster();
 
             //Get local server group
             ClusterGroup forLocal = cluster.forLocal();
 
             //Get a compute task for local servers
             IgniteCompute compute = ignite.compute(forLocal);
 
             //broadcast the computation to local nodes
             compute.broadcast(() -> {
                 System.out.println("********
Local Only
*********");
             });
         }
     }
}

It prints the message to the local program console only: