CODEWITHSUNDEEP
javaloops
Gabriel Colón
Gabriel Colón

Reputation: 21

Infinite loop on .hasNext()

I am trying to read a file and extract the largest number. I want to read the file till the end but hasNext() keeps giving me true. When I tried changing this to hasNextInt(), it never went in even when my characters where integers. How can I get out of the loop and read my integers correctly? Help would be much appreciated. 

int maxScore=0;
        int score = 0;
        Scanner scan = new Scanner("PacManHighScore");
        while(scan.hasNext()) {
            if(scan.hasNextInt()) {
                score = scan.nextInt();
            }
            System.out.println(score);
            if(score > maxScore) {
                maxScore = score;
            }
        }
        scan.close();

Upvotes: 0

Views: 204

Answers (1)

Anubhav
Anubhav

Reputation: 89

You have forgot to skip non int value so you are stuck in an infinite loop.

Try the code below.

int maxScore=0;
int score = 0;
Scanner scan = new Scanner("PacManHighScore");
while(scan.hasNext()) {
    if(scan.hasNextInt()) {
        score = scan.nextInt();
    }else{
        scan.next();
    }
    System.out.println(score);
    if(score > maxScore) {
        maxScore = score;
    }
}
scan.close();

Upvotes: 2

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