Just set the delimiter to two double-quotes with nothing inside ... To complete the use case, you must convert this one-character String into a single Java char with the charAt(0) method. Notice that ...

Using Java and the swing framework ... We create a JTextField with a maximum length of 1 to restrict it to single character input. 2. We set a DocumentFilter to filter text changes and ensure ...

Interestingly, the Java Scanner char input is not supported through a defined method in the Scanner class. However, it is possible to have a Scanner input one char at a time through the use of the ...