Java课程作业问题

我是一名本科生，我正在寻找帮助，帮助我解决为我的课程编写的代码故障

import weather.WeatherData;
import Weather.data.classes.WeatherReading;
import Weather.data.classes.WeatherStation;

/**
 * QUESTION 01
 * 
 * If you decide to answer question 01 then the main method below should be used as the entry point for your application
 * You may use as many other classes as you feel necessary as long as all code is supplied 
 * 
 * Remember to add -Xmx1024m to the VM arguments using menu run --> run configurations in eclipse
 */
public class Answer01 {
    public static void main(String[] args) {
        System.out.println("Question 01");
        /*
         * Add your code below
         */
        WeatherStation x = new WeatherStation("site", "a", 1.1, 1.0);
        WeatherReading y = new WeatherReading(1,2,3,4,5,6);
        String line[] = WeatherData.getData();
        ArrayList<WeatherStation>weatherSize = new ArrayList<>();
        for(int i = 1; i < line.length; i++){
        String [] split = line[i].split(",");
        WeatherStation z = new WeatherStation(line[0], line[1], Double.parseDouble(line[2]), Double.parseDouble(line[3]));
        weatherSize.add(z);
        }

        System.out.println(weatherSize.size() + " test");

    }   
}

和天气读数：

package Weather.data.classes;

public class WeatherReading {
    public int year;
    public int month;
    public int date;
    public int hour;
    public int windSpeed;
    public int temperature;

    public WeatherReading(int year, int month, int date, int hour, int windSpeed, int temperature){
        this.year = year;
        this.month = month;
        this.date = date;
        this.hour = hour;
        this.windSpeed = windSpeed;
        this.temperature = temperature;
    }    
}

---

我的建议是检查从文件中读取的行数组的长度

String line[] = WeatherData.getData();
System.out.println("Number of lines : " + line.length);

通过这种方式，您将知道文件是否被正确读取。 你也能查一下这条线吗

 WeatherStation z = new WeatherStation(line[0], line[1], Double.parseDouble(line[2]), Double.parseDouble(line[3]));

我想应该是这样

WeatherStation z = new WeatherStation(split[0], split[1], Double.parseDouble(split[2]), Double.parseDouble(split[3]));

你确定

WeatherData.getData（）返回什么？返回的字符串中有“

”，“。请告诉我您导入的jar，以便在问题没有解决时我可以更正。

---

我想你还不清楚你在做什么。

你能把这个例子简化一点，并提供样本数据来尝试吗？你为什么这样做：

String[]split=line[I]。split（“，”）

？您在哪里使用

split

？@JacobBarnes是的，数组的第一行包含站点id、站点名称、纬度、经度等标题信息。看起来您指的是新气象站（split[0]、split[1]、Double.parseDouble（split2]）、Double.parseDouble（split[3]）；使用拆分而不是行。@isaace这是一个逗号分隔的字符串，我试图使用字符串[]拆分=行[i]来拆分它。拆分（“，”；

WeatherStation z = new WeatherStation(split[0], split[1], Double.parseDouble(split[2]), Double.parseDouble(split[3]));

 String line[] = WeatherData.getData();