How to read N number of lines from a file in java randomly

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I am fairly new to java, so please bear with me if I have done something wrong. I have written a code in java that reads in N number of lines from a file in java and puts it in array of double and then prints it out;

    ArrayList<Double> numbers = new ArrayList<Double>();
    Scanner read = new Scanner(new File("numberfile"));
    int counter = 0;
    while(read.hasNextLine() && counter < 10)
    {

        System.out.println(read);
        counter++;

    }

The file contains bunch of numbers from 1 to 100;

Currently, my code prints out all the numbers like this [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], if I tell it to read the first 10 numbers. What I want to do now is print out these numbers in a random order, for example [2, 1, 6, 8, 9, 3, 7, 10, 3, 5].

And also if possible, I want to write a code that prints out the first 10 numbers randomly N number of times. For example, print out the first 10 numbers 50 times in a random order.

Thanks for your help and please let me know if I am unclear.

asked 1 min ago

Henry

1

How to read N number of lines from a file in java randomly