用linked list 来理解Decorator 模式

EricYeung

于 2006-02-13 12:04:00 发布

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分类专栏： Java 文章标签： decorator list string character null class

本文链接：https://blog.youkuaiyun.com/EricYeung/article/details/597858

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/*
 * decorator in linked list 's point of view ??????
 */
class TestClass {
    String desc;
    TestClass tc;
    public TestClass(TestClass tc, String desc) {
        this.tc = tc;
        this.desc = tc == null ? "" : tc.desc + desc;
    }

    public String getDesc() {
        return desc;
    }
}

public class Hello {
    public static void main(String[] args) {
        TestClass t = new TestClass(new TestClass(new TestClass(new TestClass(null, ""), "A"), "B"), "C");
        System.out.println(t.getDesc());

        TestClass t2 = new TestClass(null, "");
        char a = 'A';
        while (a <= 'Z') {
            t2 = new TestClass(t2, new Character(a).toString());
            a++;
        }
        System.out.println(t2.getDesc());
    }
}