java.lang.Character.isLetterOrDigit(char ch)

package com.codingdict;



import java.lang.*;



public class CharacterDemo {



   public static void main(String[] args) {



      // create 2 char primitives ch1, ch2

      char ch1, ch2;



      // assign values to ch1, ch2

      ch1 = 'A';

      ch2 = '1';



      // create 2 boolean primitives b1, b2

      boolean b1, b2;



      /**

       *  check if ch1, ch2 are letter or digit and assign

       *  results to b1, b2

       */

      b1 = Character.isLetterOrDigit(ch1);

      b2 = Character.isLetterOrDigit(ch2);



      String str1 = ch1 + " is a letter/digit is " + b1;

      String str2 = ch2 + " is a letter/digit is " + b2;



      // print b1, b2 values

      System.out.println( str1 );

      System.out.println( str2 );

   }

}