在Java中如何使用接口实现策略与回调_OOP接口策略回调方法分享

interface SortStrategy {
    void sort(int[] arr);
}

class BubbleSort implements SortStrategy {
    public void sort(int[] arr) {
        System.out.println("使用冒泡排序");
        // 简化逻辑
    }
}

class QuickSort implements SortStrategy {
    public void sort(int[] arr) {
        System.out.println("使用快速排序");
        // 简化逻辑
    }
}

class Sorter {
    private SortStrategy strategy;

    public void setStrategy(SortStrategy strategy) {
        this.strategy = strategy;
    }

    public void executeSort(int[] arr) {
        strategy.sort(arr);
    }
}

Sorter sorter = new Sorter();
sorter.setStrategy(new BubbleSort());
sorter.executeSort(data);

sorter.setStrategy(new QuickSort());
sorter.executeSort(data);

interface Callback {
    void onSuccess(String result);
    void onFailure(String error);
}

class NetworkService {
    public void fetchData(String url, Callback callback) {
        // 模拟网络操作
        boolean success = Math.random() > 0.5;
        if (success) {
            callback.onSuccess("数据获取成功");
        } else {
            callback.onFailure("网络错误");
        }
    }
}

NetworkService service = new NetworkService();
service.fetchData("http://example.com", new Callback() {
    public void onSuccess(String result) {
        System.out.println("成功: " + result);
    }
    public void onFailure(String error) {
        System.out.println("失败: " + error);
    }
});

service.fetchData("http://example.com", 
    result -> System.out.println("成功: " + result),
    error -> System.out.println("失败: " + error)
);