How to get empty input from the user in Java

Question

How do I get user input while asking the user Do you want to continue or not?

If the user press Enter then how do I go to the next instructions so I compare it to do other tasks?

What do you want the user to enter if he does not want to continue? — Jeanne Boyarsky
– Jeanne Boyarsky, Commented Feb 14, 2011 at 1:49
i just wanna know if i be taking integer input then if user want to skip that and press enter then i have to ask him next question ..... — user615599
– user615599, Commented Feb 14, 2011 at 1:50
Consider re-writing your question and putting in enough information so that we can fully understand it, because right now it's somewhat confusing. One link that has helped me learn to ask answerable questions is: How To Ask Questions The Smart Way — Hovercraft Full Of Eels
– Hovercraft Full Of Eels, Commented Feb 14, 2011 at 2:47
@user615599 - 1) if you don't take the time to write coherent questions, you are unlikely to get the answers that you need. 2) most SO folks don't respond positively to newcomers demanding answers; e.g. "I JUST WANNA KNOW ...". — Stephen C
– Stephen C, Commented Feb 14, 2011 at 3:16

score 2 · Accepted Answer · 2011-02-14 02:13:19Z

2

Scanner scanner = new Scanner(System.in);
scanner.nextLine();

Edit: Sorry, misread question (well question title and body is different). You can ask the user like this:

System.out.print("Do you want to continue? ");
Scanner scanner = new Scanner(System.in);

if (scanner.next().toLowerCase().equals("y")) {
    // continue...
} else {
    // don't continue
}

So when a user types in "y" or "Y" it will continue. Otherwise, it won't.

edited Feb 14, 2011 at 2:13

answered Feb 14, 2011 at 1:48

user613857

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6 Comments

user615599 Over a year ago

I JUST WANNA KNOW like String a = scan.next();

user613857 Over a year ago

If you just want to know, then you already know it: String userResponse = scanner.next();. Your question title, body and your comments do not match, they ask for different things. Sorry, this is all I can do.

Hovercraft Full Of Eels Over a year ago

amazed you could do that much given the nature of the question. 1+ for trying.

user613857 Over a year ago

Now that I re-read my answer, I figured if (!...) { // stop the code } would be a better way to do it. Thanks for the +1, did my best.

Hovercraft Full Of Eels Over a year ago

My guess is he needs a while loop with an if block inside of it -- the while loop to repeat, the if block to set the boolean that is tested in the while's condition block.

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