Sample.java

package com.freemindcafe.concurrency.sample8;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

public class Sample {
    
    //ScheduledExecutorService's thread don't terminate by itself
    //It is a non daemon thread and will prevent the jvm from existing
    public static void main(String[] args) {
        ScheduledExecutorService service = Executors.newScheduledThreadPool(1);
        service.schedule(()->{System.out.println("hi");}, 5, TimeUnit.SECONDS);
        service.shutdown();
        System.out.println("after thread pool shutdown");

    }

}