#Getting an regarding exceeding the length of the array, but I cant figure it out?

1 messages · Page 1 of 1 (latest)

frail frostBOT
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<@&987246399047479336> please have a look, thanks.

frail frostBOT
#

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dreamy spade
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Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 4 out of bounds for length 4
        at gameBoard.loadProperties(gameBoard.java:27)
        at gameBoard.<init>(gameBoard.java:15)
        at Game.<init>(Game.java:25)
        at Main.main(Main.java:9)
frail frostBOT
dreamy spade
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here is the method that it is suggesting the error is in but i cant figure it out

# 
 public void loadProperties() {
        try {
            Scanner reader = new Scanner(new File("boardSquares.txt"));
            while (reader.hasNextLine()) {
                String[] data = reader.nextLine().split(",");
                String name = data[0];
                int price = Integer.parseInt(data[1]);
                int rent = Integer.parseInt(data[2]);
                int location = Integer.parseInt(data[3]);
                String details = (data[4]);
                properties.add(new Property(name, price, rent, location, details));
            }
            reader.close();
        } catch (FileNotFoundException e) {
            System.out.println("An error occurred. File with name 'boardSquares' does not exist");
        }
    }
frail frostBOT
# dreamy spade ```java public void loadProperties() { try { Scanner reader...

Detected code, here are some useful tools:

Formatted code 
public void loadProperties() {
  try {
    Scanner reader = new Scanner(new File("boardSquares.txt"));
    while (reader.hasNextLine()) {
      String[] data = reader.nextLine().split(",");
      String name = data[0] ;
      int price = Integer.parseInt(data[1] );
      int rent = Integer.parseInt(data[2] );
      int location = Integer.parseInt(data[3] );
      String details = (data[4] );
      properties.add(new Property(name, price, rent, location, details));
    }
    reader.close();
  } catch (FileNotFoundException e) {
    System.out.println("An error occurred. File with name 'boardSquares' does not exist");
  }
}
dreamy spade
glass topaz
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is the source file in there aswell ?

dreamy spade
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all files are in the git repo

glass topaz
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File("boardSquares.txt"));

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that one

dreamy spade
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yes it is

glass topaz
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looks like it's trying to read something that isnt thre

dreamy spade
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it works when i took out String details = (data[4] );

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i added that now and it stopped working

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i dont see where the array is set to a length of 4

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so thats why im consfused

glass topaz
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its 5

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0 based

dreamy spade
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yes

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the length is not restricted tho

glass topaz
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do u know what line it is, that it fails on ?

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( besides the last 2 empty ones )

dreamy spade
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it doesnt even run

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after the first print which is medical monopoly it breaks

glass topaz
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Go,0,0,1,

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0 Go

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1 -> 0

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2 -> 0

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3 -> 1

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4-> ?

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place a breakpoint on line 27 and start the program in debug mode, u will see that there is no number 4

dreamy spade
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what do you mean by breakpoint

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comment it out?

glass topaz
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( or actually use your catch to print the line next time 😉 )

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do u know about debugging ?

dreamy spade
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no not really

glass topaz
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basicly its a controlled pause so u can see what is happening while the program is running

dreamy spade
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even if you add value in the "4th" position it still doent work

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ohhh ok thats pretty cool

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Go,0,0,1,hiadadasdasdasdasdasdasdad

glass topaz
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its not the same error right ? so u got progress

dreamy spade
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index 1

glass topaz
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did u counter the emtpy lines at the end ?

dreamy spade
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ohhh shoot

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yea

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that fixed it

glass topaz
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right, want a rather nice trick for next time ?

dreamy spade
#

Thanks soo much

dreamy spade
glass topaz
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if u face such problems, esp with file parsing. Save the string it reads and force a printout on the catch clause

dreamy spade
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bet

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sounds good

glass topaz
dreamy spade
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ill keep that in mind

glass topaz
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shows on screen then 😉

dreamy spade
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ohhhhh alright

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thats pretty cool

glass topaz
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catch (IndexOutOfBoundsException e) {
            System.out.println(source + " length = " + source.length()); }
dreamy spade
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betbet

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let me save this quick

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just took a quick screenshot

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Thanks soo much