使用BufferedReader读取Java中的单行

Question

I have code successfully reading from a CSV. However when I try to use fileReader to read a solo line, it makes my code stop working.

Here is my code:

try {
    String line = "";
    fileReader = new BufferedReader(new FileReader(filename));

    while ((line = fileReader.readLine()) != null) {
        String[] tokens = line.split(DELIMITER);
        for (String token : tokens) {
            totalData.add(token);
            if (!artists.contains(token)) {
                artists.add(token);
            }
        }
        for (int l = 0; l <= 999; l++) {
            lineData = fileReader.readLine();
            lineArray[l] = lineData;
        }

    }
} finally {
    fileReader.close();
}

When I try to read arrayList sizes and print data I get from the arrayList s above this code below makes it stop working:

for (int l = 0; l <= 80; l++) {
    lineData = fileReader.readLine();
    lineArray[l] = lineData;
}

If I comment this for loop, everything is fine. I really need this for loop, how can I edit my code to resolve this issue? Also, what is happening?

Answer 1

for (int l = 0; l <= 80; l++) {
    lineData = fileReader.readLine();
    lineArray[l] = lineData;
}

This hard code can replace a single line of code:

lineArray[i++] = line;

I corrected your code and that's what happened:

String line = "";
int i = 0;
try (BufferedReader fileReader = new BufferedReader(new FileReader(""))) {
    while ((line = fileReader.readLine()) != null) {
        lineArray[i++] = line;
        String[] tokens = line.split(DELIMITER);
        for (String token : tokens) {
            totalData.add(token);
            if (!artists.contains(token)) {
                artists.add(token);
            }
        }
    }
}