Java: to pick out random phrase out of a string array

Question

I declared a string array of 5 phrases. Im having trouble with printing out only one phrase randomly out of the array. My code below generates several phrases. How do I only print out one?

    int length = arr.length;
    
    for (int i = 0; i < length; i++)
    {
        int rand = (int) (Math.random() * length);
        
        System.out.println(arr[rand]);
    }

Why the for loop? Is arr the array of phrases?

General Grievance
– General Grievance

2021-02-23 20:55:36 +00:00
Commented Feb 23, 2021 at 20:55 — General Grievance
– General Grievance, Commented Feb 23, 2021 at 20:55

Dren · Accepted Answer · 2021-02-23 20:57:47Z

2

Just generate one number and call it to the array index. You dont need for loop because you are not generating multiple numbers. Simple with random.nextInt(arrayWord.length); you generate numbers 0 - array Length

public class RandomNumber {

    public static void main(String[] args) {


        String[] arrayWord = {"Test1", "Test2", "Test3", "Test4", "Tes5"};

        Random random = new Random();

        int randomNumber = random.nextInt(arrayWord.length);


        System.out.println(arrayWord[randomNumber]);
    }
}

answered Feb 23, 2021 at 20:57

Dren

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