本文小编为大家详细介绍“怎么利用Java实现天气预报播报功能”，内容详细，步骤清晰，细节处理妥当，希望这篇“怎么利用Java实现天气预报播报功能”文章能帮助大家解决疑惑，下面跟着小编的思路慢慢深入，一起来学习新知识吧。
实验代码
WeatherState.java
package lab2;public interface WeatherState { public void showState();}Weather.java
package lab2;public class Weather { WeatherState state; public void show() { state.showState(); } public void setState(WeatherState s) { state = s; }}WeatherForecast.java
package lab2;public class WeatherForecast { public static void main(String args[]) { Weather weatherBeijing = new Weather(); System.out.print("\n 今天白天:"); weatherBeijing.setState(new CloudyDayState()); weatherBeijing.show(); System.out.print("\n 今天夜间:"); weatherBeijing.setState(new LightRainState()); weatherBeijing.show(); System.out.print("转:"); weatherBeijing.setState(new HeavyRainState()); weatherBeijing.show(); System.out.print("\n 明天白天:"); weatherBeijing.setState(new LightRainState()); weatherBeijing.show(); System.out.print("\n 明天夜间:"); weatherBeijing.setState(new CloudyLittleState()); weatherBeijing.show(); }}CloudyLittleState.java
package lab2;public class CloudyLittleState implements WeatherState { public void showState() { System.out.print("少云,有时晴！"); }}CloudyDayState.java
package lab2;public class CloudyDayState implements WeatherState{ @Override public void showState() { System.out.println("多云，为阴天！"); }}HeavyRainState.java
package lab2;public class HeavyRainState implements WeatherState { @Override public void showState() { System.out.println("有大雨来临！"); }}LightRainState.java
package lab2;public class LightRainState implements WeatherState { @Override public void showState() { System.out.println("小雨，几乎没有雨！"); }}运行结果
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