MasterMember.java

import com.hazelcast.core.ExecutionCallback;
import com.hazelcast.core.Hazelcast;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.IExecutorService;

public class MasterMember {

    public static void main(String[] args) {
        HazelcastInstance hz = Hazelcast.newHazelcastInstance();
        IExecutorService executor = hz.getExecutorService("executor");

        ExecutionCallback<Long> executionCallback = new ExecutionCallback<Long>() {
            public void onFailure(Throwable t) {
                t.printStackTrace();
            }

            public void onResponse(Long response) {
                System.out.println("Result: " + response);
            }
        };

        executor.submit(new FibonacciCallable(10), executionCallback);
        System.out.println("Fibonacci task submitted");
    }
}