Question

How to determines whether the specified char value is a digit in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {
 
    public static void main(String[] args) {
        
        System.out.println(Character.isDigit('a')); // boolean isDigit(char ch)
        System.out.println(Character.isDigit('Z'));
        System.out.println(Character.isDigit('3'));
        System.out.println(Character.isDigit('0'));
    }
}
 
/*
run:

false
false
true
true
 
*/

 

70+ SQL courses for beginners and professionals