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how to do this?

how can make the program to make an exception when you write a String in a Scanner that is used for a char. for example: Scanner s = new Scanner (System.in); char myChar = s.next().charAt(0); //i can write a String in that Scanner and nothing will happen... i thought about doing this: if (myChar.length() > 0){...} or: if (Character.length(myChar) > 0){...} non of them work.. how can i make it work?

25th Jun 2020, 5:38 PM
Yahel
Yahel - avatar
1 Réponse
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If you scan in like that it will always be 1 char unless there is no input. Scan in the full string Scanner sc = new Scanner (System.in); String s = sc.next(); char c = s.charAt(); System.out.println("c = "+c); System.out.println("l = " + s.length()); this will let you check the length of the input but still use it as a char and check the length of the input
25th Jun 2020, 8:07 PM
JME