写出来好像没什么问题，可是感觉做起来思路很乱

package com.imooc.weather;

import java.util.Random;

public class Weather {

private int temperature;

private int humidity;

boolean flag = false;

public Weather() {

}

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;

}

public synchronized void generate() {

if (flag) {

try {

wait();

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

Random r = new Random();

int a = r.nextInt(41);

int b = r.nextInt(101);

this.temperature = a;

this.humidity = b;

System.out.println("生成" + this);

flag = true;

notifyAll();

}

public synchronized void read() {

if (!flag) {

try {

wait();

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

System.out.println("读取" + this);

flag = false;

notifyAll();

}

public String toString() {

return "天气数据[温度：" + this.temperature + ",湿度：" + this.humidity + "]";

}

}

package com.imooc.weather;

public class GenerateWeather implements Runnable {

Weather weather;

public GenerateWeather(Weather weather) {

this.weather = weather;

}

@Override

public void run() {

for (int i = 1; i <= 100; i++) {

weather.generate();

try {

Thread.sleep(5000);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

package com.imooc.weather;

public class ReadWeather implements Runnable {

Weather weather;

public ReadWeather(Weather weather) {

this.weather = weather;

}

@Override

public void run() {

for (int i = 1; i <= 100; i++) {

weather.read();

try {

Thread.sleep(100);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

package com.imooc.weather;

public class TestWeather {

public static void main(String[] args) {

// TODO Auto-generated method stub

Weather w = new Weather();

GenerateWeather g = new GenerateWeather(w);

ReadWeather r = new ReadWeather(w);

Thread a = new Thread(g);

Thread b = new Thread(r);

a.start();

b.start();

}

}