Java接口回调代码展示

在我们的开发过程中，Java回调是我们经常使用到的，比如我们的Thread的内部封装，还有我们的网络异步请求回调等等功能都有使用到我们的Java回调，本文主要记录一下Java回调的开发过程。

Demo目录结构为：

IWeatherUtils	定义接口
Main	运行演示
Weather	实体类
WeatherUtils	实现接口工具类

代码展示：

IWeatherUtils：

package com.clover.InterfaceCallBack;

public interface IWeatherUtils {

    void getWeather(String city, CallBack callBack);

    interface CallBack {
        void success(Weather weather);

        void error(String msg);
    }
}

Main：

package com.clover.InterfaceCallBack;

public class Main {

    public static void main(String[] args) {

        WeatherUtils weatherUtils = new WeatherUtils();
        weatherUtils.getWeather("北京", new IWeatherUtils.CallBack() {
            @Override
            public void success(Weather weather) {
                System.out.println(weather.getMsg());
            }

            @Override
            public void error(String msg) {
                System.out.println(msg);
            }
        });

    }
}

Weather：

package com.clover.InterfaceCallBack;

public class Weather {

    //城市
    private String city;
    //天气信息
    private String msg;

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }
}

WeatherUtils：

package com.clover.InterfaceCallBack;

public class WeatherUtils implements IWeatherUtils {

    @Override
    public void getWeather(String city, CallBack callBack) {

        Weather weather = new Weather();
        weather.setCity(city);
        switch (city) {
            case "北京": {
                String msg = city + "今天雾霾严重，空气质量差，建议在家刷剧玩游戏！";
                weather.setMsg(msg);
                callBack.success(weather);
                break;
            }
            case "广州": {
                String msg = city + "今天晴朗，空气质量优，适合出行！";
                weather.setMsg(msg);
                callBack.success(weather);
                break;
            }
            case "上海": {
                String msg = city + "今天有大暴雨，建议出门带伞！";
                weather.setMsg(msg);
                callBack.success(weather);
                break;
            }
            case "深圳": {
                String msg = city + "今天高温，建议在家吹空调！";
                weather.setMsg(msg);
                callBack.success(weather);
                break;
            }
            default: {
                callBack.error(city + "天气获取失败！");
            }
        }
    }
}

https://github.com/LeeckyNTG/JavaCode.git

Java接口回调代码展示

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