java 装饰模式 简单示例

public interface DecorateTest {
    void goTo();
}

public class DecoratePerson implements DecorateTest{

    private DecorateTest decorateTest;

    public DecoratePerson(DecorateTest decorateTest) {
        this.decorateTest = decorateTest;
    }

    public DecoratePerson() {
    }

    @Override
    public void goTo() {
        System.out.println("person go to ...");
        decorateTest.goTo();
    }

    public static void main(String[] args) {
        DecorateTest student = new Student();
        DecorateTest personnel = new Personnel();

        DecoratePerson decoratePerson = new DecoratePerson(student);
        decoratePerson.goTo();

        DecoratePerson decoratePerson2 = new DecoratePerson(personnel);
        decoratePerson2.goTo();
    }
}

class Student implements DecorateTest {

    @Override
    public void goTo() {
        System.out.println("school");
    }
}

class Personnel implements DecorateTest {

    @Override
    public void goTo() {
        System.out.println("work");
    }
}