老师请检查下5-3作业,另外还有个问题在最下面请看下的
来源：5-3 自由编程
吹吹风泡泡茶
2022-02-06 22:10:49
package 多线程天气数据;
public class Weather {
private int temperature; //温度
private int humidity; //湿度
boolean flag=false;
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) {
e.printStackTrace();
}
}
this.setTemperature((int) (Math.random()*40));
this.setHumidity((int) (Math.random()*100));
System.out.println("生成天气数据"+toString());
flag=true;
notifyAll();
}
public synchronized void read() {
if(!flag) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("读取天气数据"+toString());
flag=false;
notifyAll();
}
public String toString() {
return "[温度:" + this.getTemperature() + ", 湿度:" + this.getHumidity() + "]";
}
}
package 多线程天气数据;
public class GenerateWeather implements Runnable{
Weather weather;
public GenerateWeather(Weather weather) {
this.weather=weather;
}
@Override
public synchronized void run() {
for(int i=0;i<100;i++) {
weather.generate();
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
package 多线程天气数据;
public class ReadWeather implements Runnable{
Weather weather;
public ReadWeather(Weather weather) {
this.weather=weather;
}
@Override
public synchronized void run() {
for(int i=0;i<100;i++) {
weather.read();
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
package 多线程天气数据;
public class Test {
public static void main(String[] args) {
Weather weather=new Weather();
new Thread(new GenerateWeather(weather)).start();
new Thread(new ReadWeather(weather)).start();
}
}
同步我是用在Weather里方法里了,但是另外两个线程类的run()方法里如果有多个代码比如这题,是否也要在run()方法上加上同步?我是加上了,请看下的
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1回答
-
同学你好，代码完成的不错，很棒呐，继续加油！run()方法中不加synchronized也是可以的，同学可以去掉试试哦
另外不建议包名使用中文来命名哦
祝学习愉快~
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