JAVA泛型接口

事例代码：

package com.xt.thins_15_3;

import java.util.Iterator;

/**
 * 泛型接口
 * 
 * @author xue
 * 
 * @param <T>
 */
interface Generic<T> {
    public T next();
}

/**
 * 斐波纳契（一种整数数列）,普通类实现
 * 
 * @author xue
 * 
 */
class Fibonacci implements Generic<Integer> {

    protected static int count = 0;

    @Override
    public Integer next() {
        // TODO Auto-generated method stub
        return fib(count++);
    }

    public int fib(int n) {
        if (n < 2)
            return 1;
        return fib(n - 2) + fib(n - 1);
    }
}

/**
 * 迭代适配器迭代斐波纳契（一种整数数列）
 * 
 * @author xue
 * 
 */
class IterableFibonacci extends Fibonacci implements Iterable<Integer> {

    private int size;

    public IterableFibonacci(int size) {
        this.size = size;
        count = 0;
    }

    @Override
    public Iterator<Integer> iterator() {
        // TODO Auto-generated method stub
        return new Iterator<Integer>() {

            @Override
            public void remove() {
                // TODO Auto-generated method stub

            }

            @Override
            public Integer next() {
                // TODO Auto-generated method stub
                size--;
                return IterableFibonacci.this.next();
            }

            @Override
            public boolean hasNext() {
                // TODO Auto-generated method stub
                return size > 0;
            }
        };
    }

}

public class FibonacciTest {
    public static void main(String[] args) {
        Fibonacci fib = new Fibonacci();
        for (int i = 0; i < 20; i++) {
            System.out.print(fib.next() + ",");
        }
        System.out.println("
------------------------------");
        IterableFibonacci ifib = new IterableFibonacci(20);
        for (Integer integer : ifib) {
            System.out.print(integer + ",");
        }
    }
}