Store output from a for loop into a String

Question

I want to store the questionmarks in a string because later I will be using string replace method to replace those question marks with a character the user guess. This is kind of a hangman game.

Scanner keyboard = new Scanner(System.in);
    int length;
    String originalString;
    String option= "abcdefghijklmnopqrstuvwxyz";
    String questionmarks;

    System.out.println("Please enter a string");
    originalString=keyboard.nextLine();
    System.out.println(originalString);

    length=originalString.length();
    for(int i=1; i<=length;i++){
        System.out.print("?");
    }




}

Do you want as much number of ? as the length of the string? — Rohit Jain
– Rohit Jain, Commented Aug 1, 2013 at 14:39
yes, that what the loop does. Prints out ? of length of the string. — Treasure
– Treasure, Commented Aug 1, 2013 at 14:39
is this all you want to do ?=> for(int i=1; i<=length;i++){ questionmarks += "?"; } — chancea
– chancea, Commented Aug 1, 2013 at 14:40
The question is once i get the question marks, i want to store them into a string — Treasure
– Treasure, Commented Aug 1, 2013 at 14:41

arshajii · Accepted Answer · 2013-08-01 14:41:12Z

2

What about

questionmarks = originalString.replaceAll(".", "?");

i.e. replace every character (.) with a ?. This eliminates the need for an explicit for-loop.

For example:

String originalString = "abcd";
String questionmarks = originalString.replaceAll(".", "?");

System.out.println(questionmarks);

????

answered Aug 1, 2013 at 14:41

arshajii

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2 Comments

thegrinner Over a year ago

In case anyone is horribly confused why replacing periods actually replaces letters, replaceAll uses regex.

Treasure Over a year ago

Yeah i will accept the answer once the time is up, pretty straight answer. I didn't do this because we never learned this method in class. :S

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