KevinGuan — Mon, 21 Jan 2008 06:54:00 GMT

前阵子就开始在看TIJ了，不过当看到内部类�Ӟ��q��卡住了。本来中文就没怎么学好�Q�再加上��译的语�a�有些变味�Q�一时没怎么看懂�Q�就先搁�|�了会�?br /> 今天重新看了下，内部�c�部分，有些对着例子慢慢看，比上�ơ多明白了些�Q�有些例子代码觉得比较不错，可是又不知道觉得哪里不错�Q?br /> 先占个坑吧，省得忘记了�?br /> �q�里的代码是一个Sequence 和Selector的例子，一个应该是序列�Q�而另外的则是一个选择器吧�?br /> 代码如下�Q?br />

1package test;
2
3public class Sequence {
4    private Object[] objects;
5
6    private int next = 0;
7
8    public Sequence(int size) {
9        objects = new Object[size];
10    }
11
12    public void add(Object object) {
13        if (next < objects.length) {
14            objects[next++] = object;
15        }
16    }
17
18    private class SSelector implements Selector {
19        private int i = 0;
20
21        public Object current() {
22            return objects[i];
23        }
24
25        public boolean end() {
26            if (i == objects.length) {
27                return true;
28            }
29            return false;
30        }
31
32        public void next() {
33            if (i < objects.length) {
34                i++;
35            }
36        }
37
38    }
39
40    public Selector getSelector() {
41        return new SSelector();
42    }
43
44    public static void main(String[] args) {
45        Sequence sequence = new Sequence(10);
46        for (int i = 0; i < 10; i++) {
47            sequence.add(new Integer(i));
48        }
49        Selector selector = sequence.getSelector();
50        while (!selector.end()) {
51            System.out.println(selector.current());
52            selector.next();
53        }
54    }
55
56}
57
58interface Selector {
59    void next();
60
61    Object current();
62
63    boolean end();
64}

觉得�q�里代码应该扩展下，会有新的用处吧。不�q�却有感觉是��单问题复杂化�Q�但是也觉得应该如此�~�写代码�?br /> OO�q�真是门艺术啊�?/span>

KevinGuan 2008-01-21 14:54 发表评论

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