天气类
package com.imooc.thread.exercise5_3;

public class Weather {
	//成员属性
	private int temperature;
	private int humidity;
	boolean flag = false;

	//无参构造方法
	public Weather() {

	}

	//有参构造方法
	public Weather(int temperature, int humidity) {
		this.setTemperature(temperature);
		this.setHumidity(humidity);
	}

	//getters/setters方法
	public int getTemperature() {
		return temperature;
	}

	public void setTemperature(int temperature) {
		this.temperature = temperature;
	}

	public int getHumidity() {
		return humidity;
	}

	public void setHumidity(int humidity) {
		this.humidity = humidity;
	}

	//产生随机数据额方法
	public synchronized void generate() {
		//没有数据的情况下产生一个数据
		if (flag) {
			try {
				wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		this.temperature = (int) (Math.random() * 40);
		this.humidity = (int) (Math.random() * 100);
		System.out.println("生成天气数据 [温度=" + this.getTemperature() + ", 湿度=" + this.getHumidity() + "]");
		flag = true;
		notifyAll();
	}

	//读取数据的方法
	public synchronized void read() {
		//有数据的情况下可读取数据
		if (!flag) {
			try {
				wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		System.out.println("读取天气数据 [温度=" + this.getTemperature() + ", 湿度=" + this.getHumidity() + "]");
		flag = false;
		notifyAll();
	相关代码：}

	//重写tostring方法
	@Override
	public String toString() {
		return "[温度=" + temperature + ", 湿度=" + humidity + "]";
	}

}

产生天气类
package com.imooc.thread.exercise5_3;

public class GenerateWeather implements Runnable {
	//成员属性：对象
	private Weather weather;

	//无参构造方法
	public GenerateWeather() {

	}

	//有参构造方法
	public GenerateWeather(Weather weather) {
		this.setWeather(weather);
	}

	//getters/setters方法
	public Weather getWeather() {
		return weather;
	}

	public void setWeather(Weather weather) {
		this.weather = weather;
	}

	//重写结构的run方法
	@Override
	public void run() {
		for (int i = 0; i < 100; i++) {
			weather.generate();
			try {
				Thread.sleep(5000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}

	}

}

读取天气类
package com.imooc.thread.exercise5_3;

public class ReadWeather implements Runnable {
	//成员属性：对象
	private Weather weather;

	//无参构造方法
	public ReadWeather() {

	}

	//有参构造方法
	public ReadWeather(Weather weather) {
		this.setWeather(weather);
	}

	//getters/setters方法
	public Weather getWeather() {
		return weather;
	}

	public void setWeather(Weather weather) {
		this.weather = weather;
	}

	//重写结构的run方法
	@Override
	public void run() {
		for (int i = 0; i < 100; i++) {
			weather.read();
			try {
				Thread.currentThread().join(100);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}

	}

}

测试类
​package com.imooc.thread.exercise5_3;

public class WeatherTest {

	public static void main(String args[]) {
		Weather w = new Weather();
		Thread td = new Thread(new GenerateWeather(w));
		td.start();
		Thread td1 = new Thread(new ReadWeather(w));
		td1.start();

	}

}