Question

How to check if a string contain only letters in Java

Answer 1

public class MyClass {
    public static boolean isInAlphabeticalCharacters(String s) {
        char[] chars = s.toCharArray();

        for (char ch : chars) {
            if (!Character.isLetter(ch)) {
                return false;
            }   
        }
        return true;
    }
    public static void main(String[] args) {
        String s1 = "java c c++";
        System.out.println(isInAlphabeticalCharacters(s1));
  
        String s2 = "abcxyz";
        System.out.println(isInAlphabeticalCharacters(s2));
    }
}
   
  
   
   
/*
run:
   
false
true
  
*/

 

70+ SQL courses for beginners and professionals