Count letters in a string.

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Count letters in a string.
Posted on: June 28, 2010 at 12:00 AM

This example counts letter present in string.

Description:

This tutorial demonstrate how to find number of letter exists in a string. The str.length() method find the length of string.

Code:


public class CheckLetterInString {

  public static void main(String[] args) {

    String str = "1a2b3c4d5e678f";

    int counter = 0;

    for (int k = 0; k < str.length(); k++) {

      if (Character.isLetter(str.charAt(k)))

        counter++;

    }

    System.out.println(counter + " letters.");

  }

}

Output:

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