Count Lower Case Letters in Java

 Machine Problem

Write a Java program to ask the user a string and then the program will count the number    of lowercase letters in the given string by user.

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Program Listing

/*

 *  LowerCase.java

 *  

 *  Jake Rodriguez Pomperada, MAED-IT, MIT

 *  www.jakerpomperada.blogspot.com and www.jakerpomperada.com

 *  jakerpomperada@gmail.com

 *  Bacolod City, Negros Occidental Philippines

 * 

 * Machine Problem

 * 

 * Write a Java program to ask the user a string and then the program will count the number

 * of lowercase letters in the given string by user.

 */

import java.util.Scanner;

 

public class LowerCase_Letters {

    

    

    private static long countLowerCase(String s) {

    return s.codePoints().filter(c-> c>='a' && c<='z').count();

}

    

 public static void main(String[] args) {

     

  Scanner input = new Scanner(System.in);

   

  System.out.println();

  System.out.println("\tCount Lower Case Letters in Java");

  System.out.println();

  

  System.out.print("\tEnter a String : ");

  String val_str = input.nextLine();

  

  long count_LowerCase = countLowerCase(val_str);

  

  System.out.println();

  System.out.print("\tNumber of Lowercase Letters : " + count_LowerCase);

  System.out.println("\n\n");

  System.out.println("\tEnd of Program");

  System.out.println();

 }

 

}