Hi! I have write from the file problem. Java question I have a file call 1.txt c

Question

Hi! I have write from the file problem. Java question

I have a file call 1.txt contain some sets of array:

{0,11,10},{11,12,13}
{1,2,3},{2,1,4}
{4,5,6},{5,6,8},{8,9,2}
{4,5,6},{5,6,8},{8,9,2},{6,3,1}

I want to write a code, when i print(array[0]). it should return 0,11,1,2,4,5,8,4,5,8,6. It just first element in the array.

Here is my code:

public static void main(String[] args) {
       String folder = "data";
       try{
           File f = new File("1.txt");
           Scanner s = new Scanner(f);
           String[] array;          
           String line = s.nextLine();
           array = line.split(",");
           System.out.print(array[0]);

           //Close the input stream
           s.close();
       }catch (Exception e){//Catch exception if any
               System.err.println("Error: " + e.getMessage());
       }
       }
   }

Can you help finish my code? And explain!

Explanation / Answer

package QnA;

import java.io.File;
import java.util.Scanner;

public class PrintArrayByIndex {
   public static void main(String[] args) {
       try {
           String folder = "folder_location";
           File f = new File(folder+"1.txt");
           Scanner s = new Scanner(f);
           String[] array = new String[5];
          
           //making result string empty (initially array is null
           for(int i=0;i<array.length;i++)
               array[i] = "";
           while (s.hasNext()) {
               //scanning each line
               String line = s.nextLine();
               //spliting by closing bracket
               String arraysInLine[] = line.split("}");
               for (String index : arraysInLine) {
                   //for each array removing brackets
                   index = index.replaceAll("[{}]", "");
                   //for counting index of particular array
                   int countIndex =0;
                   //for each array splitting each element by ,
                   String[] data = index.split(",");
                   for (int i = 0; i < data.length; i++) {
                       if(data[i] == null ||data[i].isEmpty())
                           continue;
                       //adding each element in array at index countIndex to resultant array as string
                       array[countIndex] += data[i] + ",";
                       countIndex++;
                   }
               }
           }
           System.out.print(array[0]);
           // Close the input stream
           s.close();
       } catch (Exception e) {// Catch exception if any
           System.err.println("Error: " + e.getMessage());
       }
   }

}

Got through the comments to understanding of code

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