设计模式之模板方法模式

public abstract class AbstractTemplateMethod {
    public abstract void operationOne();

    public abstract void operationTwo();

    public void templateMethod() {
        operationOne();
        operationTwo();
        System.out.println("AbstractTemplate");
    }
}

public class ConcreteTemplateA extends AbstractTemplateMethod {
    @Override
    public void operationOne() {
        System.out.println("ConcreteTemplateA---operationOne");
    }

    @Override
    public void operationTwo() {
        System.out.println("ConcreteTemplateA---operationTwo");

    }
}

public class ConcreteTemplateB extends AbstractTemplateMethod {
    @Override
    public void operationOne() {
        System.out.println("ConcreteTemplateB---operationOne");
    }

    @Override
    public void operationTwo() {
        System.out.println("ConcreteTemplateB---operationTwo");
    }
}

public class AbstractTemplateMethodDemo {
    public static void main(String[] args) {
        AbstractTemplateMethod templateA = new ConcreteTemplateA();
        AbstractTemplateMethod templateB = new ConcreteTemplateB();
        templateA.templateMethod();
        templateB.templateMethod();
    }
}