A simple example of Template pattern.

TemplatePattern.java

class Scratch {
    public static void main(String[] args) {
        Worker programmer = new Programmer();
        Worker carpenter = new Carpenter();

        programmer.goToWork();
        carpenter.goToWork();
    }
}

abstract class Worker {

    public void goToWork() {
        goingToWork();
        doingWork();
        returningHome();
    }

    private void goingToWork() {
        System.out.println("Going to work.");
    }

    abstract void doingWork();

    private void returningHome() {
        System.out.println("Traveling home from work.");
    }
}

class Programmer extends Worker {

    @Override
    void doingWork() {
        System.out.println("Making a Springboot API.");
    }
}

class Carpenter extends Worker {

    @Override
    void doingWork() {
        System.out.println("Cutting long lengths of pine floorboards.");
    }
}