How would I go about, using the scanner class, taking in one character and then continuing to display the next random character for the user to enter?

Question

My intentions are to show a letter and have the user type the letter, while after they have hit the corresponding key (whether it's right or wrong) it is to then display the next key. I can only make this happen, at the moment, after pressing the key and then pressing the enter key following so that it finishes the scanner.next() method. Any way that I could automate the enter key so that I could make it scan in the character letter and then automatically continue to the next randomly generated character? Let me know if there needs to be clarification on this.

//some initialized code here
for(int i = 0; i < 5; i++)
{
int letterToDisplay = rand.nextInt(26)
System.out.printf("%s\r\n", letters[letterToDispaly]);

**String inputLetter = scanner.next();**

if(intputLetter.exquals(letters[letterToDisplay]))
{
letterCounter(letterToDisplay);
}
}
//some methods etc. here

Thanks,

Kyle P.

score 0 · Accepted Answer · edited May 23 '17 at 10:25

There is no portable way to read user input from a console character-by-character using the standard API; for example the Unix terminal is by default line-buffered which means that the OS does not transfer characters into the application's buffer until the user hits enter. You can't do it even from standard C.

You need to run code specific to the OS and terminal to achieve this, ideally wrapped in a library, like the ones discussed here: What's a good Java, curses-like, library for terminal applications?

A better option is using a graphical user interface. It's not the 1970s anymore ;)

How would I go about, using the scanner class, taking in one character and then continuing to display the next random character for the user to enter?

1 Answers1