Template Method Pattern

Abstract Class

public abstract class People {
	public void printDailyRoutine() {
		wakeUp();
		work();
		exercise();
	}
	
	public abstract void wakeUp();
	public abstract void work();
	public abstract void exercise();
}

Concrete Class

public class Me extends People {
	@Override
	public void wakeUp() {
		System.out.println("wake up at 07:00 am")
	}
	
	@Override
	public void work() {
		System.out.println("working as a software engineer")
	}
	
	@Override
	public void exercise() {
		System.out.println("bulk up")
	}
}

public class You extends People {
	@Override
	public void wakeUp() {
		System.out.println("wake up at 09:00 am")
	}
	
	@Override public void work() {
		System.out.println("working as a coffeeshop manager")
	}
	
	@Override
	public void exercise() {
		System.out.println("running")
	}
}

Main

public static void main(String[] args) {
	People someone = args[0].equals("me") ? new Me() : new You();
	me.printDailyRoutine();
}