'Trying to copy data from a file to an array but it gives me error

Hi I am new on programing and I am having a problem I am trying to copy some things from a file to a array and I just want to copy in the position 1,2,3 and 4 from the file. Example copy to the array 11 , G , 0 , 20.

FILE TEXT:
0;11;G;0;200;1
2;10;F;0;300;2
0;12;J;0;100;3

String[][] aa = new String[100][6];
try {
    Scanner x = new Scanner(new File("Turmas.txt"));
    x.useDelimiter("[;\n]");

    for (int i = 0; i < 100; i++) {
        for (int j = 0; j < 6; j++) {
            if (x.hasNext()) {
                aa[i][j] = x.next();
            }
        }
    }
    x.close();
} catch (FileNotFoundException ex) {
    JOptionPane.showMessageDialog(
        null, "An error occurred, try restarting the program!", 
        "ERROR!", JOptionPane.ERROR_MESSAGE
    );
}

String[][] aaa = new String[100][4];
for (int i = 0; i < 100; i++) {
    for (int j = 0; j < 4; j++) {
        if (aa[i][j] == null) {
            System.out.println("null "  + i + "  " + j);
        }
        else {
            if (aa[i][0].equals(String.valueOf(SAVEID))) {
                aaa[i][j]     = aa[i][1];
                aaa[i][j + 1] = aa[i][2];
                aaa[i][j + 2] = aa[i][3];
                aaa[i][j + 3] = aa[i][4];
            }
        }
    }
}
System.out.println(aaa[0][0]);
System.out.println(aaa[0][1]);
System.out.println(aaa[0][2]);
System.out.println(aaa[0][3]);
javaarraysfile


Solution 1:[1]

This loop:

for(int j=0;j<4;j++)

runs again with a value of j = 1 after it completes the first iteration, so when it gets to the expression aaa[i][j+3] the second index evaluates to 4, which of course is illegal. I'm not sure why you used a for loop there, since you manually increment the index values as you assign the aaa values?

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Don R

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