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User is offline Jun 28 2011 02:44 AM
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  1. In Topic: Search Array Errpr

    Posted 28 Jun 2011

    View Postsmohd, on 28 June 2011 - 02:22 AM, said:

    Quote

    Basically this code is to search an array for a surname which is on the first column. line[0][i].

    No! this is the first row not column. 
     2DArray[row][column]

    Sorry for the typo but in the code it is correct and everything is in the correct place

  2. In Topic: Reading CSV into 2D Array Using Tokenizer

    Posted 28 Jun 2011

    Thanks Crunch !

  3. In Topic: Reading CSV into 2D Array Using Tokenizer

    Posted 26 Jun 2011

    Yes i understand and i have done that. Now The Code is:
    /*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package scannerreadfile;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;
import java.util.StringTokenizer;

public class ScannerReadFile {
String[][] line = new String[6][5];
    public static void main(String[] args) throws IOException {
 
            String[][] line = new String[6][5];
        Scanner inFile = new Scanner(new FileReader("data.csv"));
String line1;


            
int i =0;
int j =0;

while (inFile.hasNextLine()) {

line1 = inFile.nextLine();
StringTokenizer st = new StringTokenizer(line1, ",", false);

while (st.hasMoreTokens()) {

line[i][j] = st.nextToken();
System.out.println(line[i][j]);
  j++;
 }
i++;
}


ScannerReadFile operation= new ScannerReadFile();
Scanner scanner = new Scanner(System.in);


System.out.println("Search for a birthday or surname, birthday= 'b'and surname= 's' ");
String SOB= scanner.nextLine();

        if(SOB.equals("s") || SOB.equals("S")){
            operation.searchSurname(line);

        }

        if(SOB.equals("b") || SOB.equals("B")){
            operation.searchBirthday(line);
        }



       
    }
}


    But it gives me the error:

    Win
    Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 5
    Henry
    15
    10 croyde
    05/12/1995
    at scannerreadfile.ScannerReadFile.main(ScannerReadFile.java:35)
    Java Result: 1

  4. In Topic: Reading CSV into 2D Array Using Tokenizer

    Posted 26 Jun 2011

    View PostCrunch, on 26 June 2011 - 11:22 AM, said:

    Do you mean that for some reason the values of i and j are not being incremented ? Oh yeah i found your terrible error. Why use 4 loops ? What you have done with while loops is correct. you dont need any for loops here. Just two counters to keep track of i and j will make your program work


    int i =0;
int j =0;

while (inFile.hasNextLine()) {

line1 = inFile.nextLine();
StringTokenizer st = new StringTokenizer(line1, ",", false);
j=0;
while (st.hasMoreTokens()) {

line[i][j] = st.nextToken();
System.out.println(line[i][j]);
  j++;                          
 }
i++;
}

    Now it is saying there is an error on the line that holds this code.
    line[i][j] = st.nextToken();

    The exact error is
    Win
    Henry
    15
    Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
    10 croyde
    at scannerreadfile.ScannerReadFile.main(ScannerReadFile.java:35)
    Java Result: 1

  5. In Topic: Reading CSV into 2D Array Using Tokenizer

    Posted 26 Jun 2011

    View PostCrunch, on 26 June 2011 - 11:22 AM, said:

    Do you mean that for some reason the values of i and j are not being incremented ?


    Yes, that would be a more accurate way to describe it.

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