How do I add a space to an existing String?

MossDog :

I created a console project which is a simple game of hangman. Here is what I have done so far...

static String answer;
static String display = "";
public static void main(String[] args) {

    System.out.println("please enter the word or phrase to be guessed");
    answer = input.next();
    System.out.print("Please make a guess: ");
    //loop to check each character in the string
    for(int i = 0; i < answer.length(); i++){
        if(answer.charAt(i) != ' ') {
            //adds an underscore to the String that will be printed
            display += "_";
        }//end if
        else {
            //adds a space to the String that will be printed
            display += " ";
        }//end else
    }//end for
    System.out.print(display);
}

What I'm trying to is to go through some text that the user inputs and print an underscore in the case of a letter and otherwise make a space.

1. Sample input: I like dogs
2. Sample output: Please make a guess: _ ____ ____

I think i am going about adding a space to the String in the wrong way and can't find anyone with the same problem.

What is actually happening is shown below,

1. Sample input: I like Dogs
2. Sample output: Please make a guess: _
3. Sample input: this is broken
4. Sample output: Please make a guess: ____

What it is doing is printing the right amount underscores until it encounters the first space and then it stops.

Delphi1024 :

input.next() only reads until the first space ' '. If you want to read a whole line you need to use input.nextLine()

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