Return a value from a task

package stkparallelcomputingserversdk.howto;

import java.io.Serializable;
import java.text.SimpleDateFormat;
import java.util.GregorianCalendar;

import agi.parallel.client.ClusterJobScheduler;
import agi.parallel.client.IJobScheduler;
import agi.parallel.client.Job;
import agi.parallel.infrastructure.Task;

public class ReturnValue {
    public static void main(String[] args) {
        try (IJobScheduler scheduler = new ClusterJobScheduler("localhost")) {
            scheduler.connect();

            Job job = scheduler.createJob();
            job.addTask(new ReturnsSimplevalue());
            job.addTask(new SetsValueOfProperties());
            job.addTask(new ReturnsJavaObject());
            job.submit();
            job.waitUntilDone();

            // Once the task completes, the task gets updated with the result object.
            System.out.println(String.format("Simple Value: Result=%s", job.getTasks().get(0).getResult()));
            Task task1 = job.getTasks().get(1);
            System.out.format("Sets Property: A=%s, B=%s, C=%s%n",
                    task1.getProperty("A"),
                    task1.getProperty("B"),
                    task1.getProperty("C"));

            AnotherJavaObject obj = (AnotherJavaObject) job.getTasks().get(2).getResult();
            SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss aaa");
            System.out.format("Complex Value: A=%s, B=%s%n",
                    obj.getA(),
                    dateFormat.format(obj.getB().getTime()));
        }

        /*
         * The output of the application should resemble:
         * Simple Value: Result=3
         * Sets Property: A=1, B=2, C=3.14
         * Complex Value: A=String, B=2/28/2013 3:06:18 PM
         */
    }

    private static class ReturnsSimplevalue extends Task {
        @Override
        public void execute() {
            this.setResult(3);
        }
    }

    private static class SetsValueOfProperties extends Task {
        @Override
        public void execute() {
            this.setProperty("A", 1);
            this.setProperty("B", "2");
            this.setProperty("C", 3.14);
        }
    }

    private static class ReturnsJavaObject extends Task {
        @Override
        public void execute() {
            AnotherJavaObject object = new AnotherJavaObject();
            object.setA("String");
            object.setB(new GregorianCalendar());
            this.setResult(object);
        }
    }

    private static class AnotherJavaObject implements Serializable {
        private String a;
        private GregorianCalendar b;

        public final String getA() {
            return this.a;
        }

        public final void setA(String value) {
            this.a = value;
        }

        public final GregorianCalendar getB() {
            return this.b;
        }

        public final void setB(GregorianCalendar value) {
            this.b = value;
        }
    }
}