Nov5-09, 11:46 AM
I am having some trouble with the Java Scanner to read input from the keyboard.
I am trying to keep my input cleaned up and secure, so I am checking for the right type and value, and clearing the input buffer if it isn't. I also restart the prompt loop if it isn't right, so they can try again. I am using the .nextLine() method to clear the input buffer.
The problem that I am seeing is that I sometimes don't get a repeated prompt until I enter in a second input. Things seem to work fine without the nextLine() calls, but then I always feel like I am leaving a dangling possible problem.
I was also trying to use combinations of while(!talkToMe.hasNextInt()) loops to try and get away from my Flag system shown below, but it didn't quite seem to work so I stuck with the flags.
I have read through the Java API documentation but that didn't seem to help, and I have done other searches for explanations of the Scanner object. It just feels like I am missing some key element of how the Scanner class is working. Is it an interrupt driven thing? A sit-and-wait-for-the-input thing? These questions might be the root of it; perhaps by executing .nextLine() it is actually waiting instead of going to the next statement.
Thanks for the help,
Here is a code chunk at the moment:
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