All about Daemons!

DaemonNonDaemon.java

import java.util.concurrent.Executor;

public class ExecutorsSample {
    public static void main(String[] args) {
//        Executor executor = new Executor() {
//            @Override
//            public void execute(Runnable command) {
//                command.run();
//            }
//        };
        //  we can simply write as follows
        Executor executor = Runnable::run;

        //  placing runnable in executor
        executor.execute(new Runnable() {
            @Override
            public void run() {

            }
        });
    }
}