CustomRunnable.java

package com.pivincii;

public class CustomRunnable implements Runnable {
    @Override
    public void run() {
        System.out.println("Start " + Thread.currentThread().getName());
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("End" + Thread.currentThread().getName());
    }

    public static void main(String[] args) {
        new Thread(new CustomRunnable()).start();
    }
}