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Thread: Help me find the error here.

  1. #1
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    Exclamation Help me find the error here.

    so this is my code. I am attempting to read input from a .txt file that has data about earthquakes. Below is the actual data. My code should store each occurence of an earthquake as an ArrayList object. I have a class called Earthquake. The code of the class is below too. I the error I get is also copied below. Could someone help me figure out what is wrong? I know the error is in the EarthquakeDemo

    Here is the error I get when I run the EarthquakeDemo code
    ----jGRASP exec: java EarthquakeDemo

    time latitude longitude depth mag place
    Exception in thread "main" java.util.InputMismatchException
    at java.util.Scanner.throwFor(Scanner.java:909)
    at java.util.Scanner.next(Scanner.java:1530)
    at java.util.Scanner.nextDouble(Scanner.java:2456)
    at EarthquakeDemo.main(EarthquakeDemo.java:20)

    ----jGRASP wedge2: exit code for process is 1.
    ----jGRASP: operation complete.

    earthquakeUpdated.txt
    time latitude longitude depth mag place
    2013-10-01T20:44 38.834 -122.802 2.3 2.5 California
    2013-10-01T20:17 62.254 -150.816 46 2.6 Alaska
    2013-10-01T19:41 55.7806 -34.7243 12.03 5.2 Reykjanes Ridge
    2013-10-01T19:26 36.1288 -97.6639 5.01 3 Oklahoma
    2013-10-01T17:51 38.8343 -122.795 2.5 2.7 California

    EARTHQUAKE CLASS

    public class Earthquake
    {
    private String time;
    private double latitude;
    private double longitude;
    private double depth;
    private double magnitude;
    private String place;
    /* +Earthquake (lat: double, long: double): void
    +setTime(t: String): void
    +setDepth(d: double) void
    +setMagnitude(m: double): void
    + setPlace(p: String): void
    + getPlace(): String
    + getMagnitude(): double
    +toString():String*/

    public void Earthquake(double lat, double longi)
    {
    latitude = lat;
    longitude = longi;
    }
    public void setTime(String t)
    {
    time = t;
    }
    public void setDepth(double d)
    {
    depth=d;
    }
    public void setMagnitude(double m)
    {
    magnitude = m;
    }
    public void setPlace(String p)
    {
    place = p;
    }
    public String getPlace()
    {
    return place;
    }
    public double getMagnitude()
    {
    return magnitude;
    }
    public String toString()
    {
    String stat= "An earthquake in "+place+ " with magnitude of "+ magnitude+ " occurred at "+time;
    return stat;
    }
    }

    EarthquakeDemo
    import java.util.*;
    import java.io.*;
    public class EarthquakeDemo
    {
    public static void main(String [] args)throws IOException
    {
    ArrayList<Earthquake> list = new ArrayList<Earthquake>();
    File file = new File("earthquakeUpdated.txt");
    Scanner infile = new Scanner(file);

    String ignore = infile.nextLine();
    System.out.println(ignore);
    int i=0;
    while(infile.hasNext())
    {
    Earthquake temp = new Earthquake();
    temp.setTime(infile.next());
    temp.Earthquake(infile.nextDouble(),infile.nextDou ble());
    temp.setDepth(infile.nextDouble());
    temp.setMagnitude(infile.nextDouble());
    temp.setPlace(infile.nextLine());

    list.add(i, temp);
    i++;
    }
    infile.close();
    for(int x =0; x<list.size();x++)
    {
    System.out.println(list.get(x).toString());
    }

    }
    }


  2. #2
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    Default Re: Help me find the error here.

    Hello.
    I executed your code in ubuntu. It worked without any exceptions.
    Please try to run again.

    Syed.

  3. #3
    Member andbin's Avatar
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    Default Re: Help me find the error here.

    Quote Originally Posted by koolkirtzz View Post
    Could someone help me figure out what is wrong? I know the error is in the EarthquakeDemo

    time latitude longitude depth mag place
    Exception in thread "main" java.util.InputMismatchException
    at java.util.Scanner.throwFor(Scanner.java:909)
    at java.util.Scanner.next(Scanner.java:1530)
    at java.util.Scanner.nextDouble(Scanner.java:2456)
    at EarthquakeDemo.main(EarthquakeDemo.java:20)
    Please, note that Scanner is locale-aware. It interprets numeric values according to the configured (or default) locale.
    I tried your code and since my system has the Italian locale as default, I got InputMismatchException like you.
    To fix the problem (and make the code portable) I just added:

    infile.useLocale(Locale.ENGLISH);

    Always consider these questions about locales!
    Andrea, www.andbin.net SCJP 5 (91%) SCWCD 5 (94%)

    Useful links for Java beginners My new project Java Examples on Google Code

  4. The Following User Says Thank You to andbin For This Useful Post:

    GregBrannon (December 5th, 2013)

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