How to read line by line from a text file storing the values in a arrayList, in java?

Question

How can I read from a text file and stores the values into a an array list I specified, I have the following code so far

FileReader file = new FileReader("C:\\");
        BufferedReader reader = new BufferedReader(file);

        String text = "";
        String line = reader.readLine();
        while (line != null){

            text += line;
            line = reader.readLine();
        }
        System.out.println(text);

I want to limit the lines to 6 any line over that should provide an arrow, and I also want to check whether the values given by the user is appropriate. The array list I have created is called arraysList.

The user can enter upto 6 lines, in format, String, double, int, int

The error check I want is say if the integers the user enters is below 0 or above 100 it should provide an error and if the double is below 0 it should provide an error and also if the String does not match

Apple || Banana || Orange || PineApple || Grape || Mango

I want to store each line in the array list, but separate the values so after every space in line, and so on...

Thanks.

What's the problem you're having? – David Ehrmann Feb 07 '14 at 18:27 — David Ehrmann, Feb 07 '14 at 18:27

score 1 · Answer 1 · answered Feb 07 '14 at 18:30

1

This line is your problem.

FileReader file = new FileReader("C:\\");

It should be something like

FileReader file = new FileReader("C:\\input.txt");

Point the reader to your actual file, I mean.

answered Feb 07 '14 at 18:30

peter.petrov

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How to read line by line from a text file storing the values in a arrayList, in java?

1 Answers1