缓存池-简单实现

// 测试public class CachePoolTest {    public static void main(String[] args) {        CachePool c1 = CachePool.valueOf("cachePool");        CachePool c2 = CachePool.valueOf("cachePool");        System.out.println(c1 == c2);    }}// 缓存池class CachePool {    private static final int MAX_SIZE = 10;    private static CachePool[] pool = new CachePool[MAX_SIZE];    private static int pos = 0; // 游标    private final String name;    private CachePool(String name) {        this.name = name;       }    public String getName() {        return name;    }    public static CachePool valueOf(String name) {        for (CachePool cache : pool) {            if(cache != null && cache.name.equals(name)) {                return cache;            }        }        if(pos == MAX_SIZE) { // 先进先出原则            pool[0] = new CachePool(name);            pos = 1;        } else {            // 等价于赋值pool[pos]后，pos后移1            pool[pos++] = new CachePool(name);        }        return pool[pos-1];    }}