Template Method design pattern

AbstractTemplate.java

public abstract class AbstractTemplate {
	
	public final void execute() {
		operationInitialize();
		operation1();
		if (hook()) {
			operation2();
		}
		System.out.println("we are done..");
	}
	
	protected abstract void operationInitialize();

	protected abstract void operation1();

	protected void operation2() {
		// do something in sub class as required
	}

	protected boolean hook() {
		return false;
	}

}

TemplateA.java

public class TemplateA extends AbstractTemplate {

	@Override
	protected void operationInitialize() {
		System.out.println("hi i'm A");
	}

	@Override
	protected void operation1() {
		System.out.println("doing operation 1 in A");
	}

	@Override
	protected void operation2() {
		System.out.println("doing operation 2 in A");
	}

	@Override
	protected boolean hook() {
		return true;
	}

}

TemplateB.java

public class TemplateB extends AbstractTemplate {

	@Override
	protected void operationInitialize() {
		System.out.println("hi i'm B");
	}

	@Override
	protected void operation1() {
		System.out.println("operation 1 in B");
	}

}

TemplateMethodDemo.java

public class TemplateMethodDemo {

	public static void main(String[] args) {
		AbstractTemplate templateA = new TemplateA();
		templateA.execute();
		
		System.out.println("\n-----------------------\n");

		AbstractTemplate templateB = new TemplateB();
		templateB.execute();
	}

}