Thread: Four arrays 32 line characters from text

So it will look somethin' like this right?

PHP Code:

import java.util.*;
import java.io.*;

public class monroylab6
{
    //Read scanner for public class
    static Scanner console = new Scanner(System.in);

    //METHOD: Main
    public static void main(String[] args)
    {

        //Variables

        String firstName;
        int counter = 0;
        int menuNumber = 0;
        boolean on = true;
        
        char[] arrayDNA1 = new char[8];
        char[] arrayDNA2 = new char[8];
        char[] arrayDNA3 = new char[8];
        char[] arrayDNA4 = new char[8];

        System.out.println("Please enter first name: ");
        firstName = console.next();
        System.out.println(" ");
    
        System.out.println("Hello, " + firstName);
        System.out.println("This program will be reading a file called seq.txt that contains");
        System.out.println("single base letters from multiple DNA sequence fragments, and then");
        System.out.println(" saving thoe base letters in multiple 1-D arrays.");
        System.out.println("After the arrays are filled, the data will be analyzed in various ways.");

        //Read .txt file
        File inFile = new File ("seq.txt");
        Scanner in = new Scanner(inFile);

        while(on)
        {
            //Fill out first array
            if (counter < 8)
            {
                arrayDNA1[counter] = inFile;
                counter++;

                //Print out arrayDNA1
                for(int i = 0; i < arrayDNA1.length; i++)
                {
                    System.out.println(arrayDNA1[i]);
                }
            }

            //Fill out second array
            if (counter < 16)
            {
                arrayDNA2[counter] = inFile;
                counter++;

                //Print out arrayDNA2
                for(int i = 0; i < arrayDNA2.length; i++)
                {
                    System.out.println(arrayDNA2[i];
                }
            }

            //Fill out third array
            if (counter < 24)
            {
                arrayDNA3[counter] = inFile;
                counter++;

                //Print out arrayDNA3
                for(int i = 0; i < arrayDNA3.length; i++);
                {
                    System.out.println(arrayDNA3[i]);
                }
            }

            //Fill out fourth array
            if (counter < 32)
            {
                arrayDNA4[counter] = inFile;
                counter++;

                //Print out arrayDNA4
                for(int i = 0; i < arrayDNA4.length; i++);
                {
                    System.out.println(arrayDNA4[i]);
                }
            }
        }


} 


I think I am missing somethin' though....

Arrrrrgh! Duplicate code, run for your lives.

char[] arr1 = fillArray();
char[] arr2 = fillArray();
char[] arr3 = fillArray();
char[] arr4 = fillArray();

The fillArray method will create a new array with a length of 8. Read 8 chars. Insert chars into array. Return array. Note: you will have to create one input stream and keep it open (perhaps pass as a parameter) otherwise you end up reading the same characters each time.

I really don't understand. I for some reason am good at arrays if input but reading from text...I have no idea what the heck I am doing. I still have to analysis the arrays in other methods.

I wonder will this work?

PHP Code:

        //Read .txt file
        File inFile = new File ("seq.txt");
        Scanner in = new Scanner(inFile);

        while(in.hasNext())
        {
            arrayDNA1[counter] = in.nextChar();
            arrayDNA2[counter] = in.nextChar();
            arrayDNA3[counter] = in.nextChar();
            arrayDNA4[counter] = in.nextChar();
            counter++;

        } //End of while loop 


Ok, I know the program underneath won't allow me to put the text line by line in order.

PHP Code:

        //Read .txt file
        File inFile = new File ("seq.txt");
        Scanner in = new Scanner(inFile);

        while(in.hasNext())
        {
            arrayDNA1[counter] = in.nextChar();
            arrayDNA2[counter] = in.nextChar();
            arrayDNA3[counter] = in.nextChar();
            arrayDNA4[counter] = in.nextChar();
            counter++;

        } //End of while loop 


Also, I figured how to do the first array.

PHP Code:

        //Read .txt file
        File inFile = new File ("seq.txt");
        Scanner in = new Scanner(inFile);

        while(in.hasNextLine() && counterDNA1 < 8)
        {
            arrayDNA1[counterDNA1] = in.next().charAt(0);
            counterDNA1++;

        } //End of while loop DNA Sequence 1 


I was told by my TA that I need a separate counter to continue for the rest of the sequence but I really don't understand how to do that. I have tried different ways to get the second arrayDNA2 to work...but is isn't.

PlEASE! HELP ME! It is due friday and I still have sub methods left to analysis the data.

I got the loop to work!!! Thanks for the help!!!