Count the number of letters, digits and special symbol using java program

Java Programming Language String in java (Article) String in java (Program)

Given Input:

 String str = "abcd_123#";

Expected Output:

This sentence containing 4 letters 3 digits 2 Special numbers

Program:

// Count the number of letters, digits and special symbol using java program

public class Main {
    public static void main(String[] args) {
        String str = "abcd_123#";
        int letterCount = 0, digitCount = 0, specialSymbolCount = 0;

		for(int i = 0; i < str.length(); i++){
			 if (Character.isLetter(str.charAt(i))) {
			 	letterCount++;
			 }else if (Character.isDigit(str.charAt(i))) {
				 digitCount++;
			} else {
             specialSymbolCount++;
        	}
		}

		System.out.println("This sentence containing "+letterCount+" letters "
		+digitCount+" digits "+specialSymbolCount+" Special numbers");
    }
}

Output:

This sentence containing 4 letters 3 digits 2 Special numbers

Explanation:

// Count the number of letters, digits and special symbol using java program

public class Main {
    public static void main(String[] args) {
        String str = "ewerwr34534";
        int letterCount = 0, digitCount = 0, specialSymbolCount = 0;

		for(int i = 0; i < str.length(); i++){
			 if (Character.isLetter(str.charAt(i))) {
			 	letterCount++;
			 }else if (Character.isDigit(str.charAt(i))) {
				 digitCount++;
			} else {
             specialSymbolCount++;
        	}
		}

		System.out.println("This sentence containing "+letterCount+" letters "
		+digitCount+" digits "+specialSymbolCount+" Special numbers");

		if(letterCount == 0 && digitCount == 0)
		{
			System.out.println( "the string is not alpha numeric");
		}
		else
		{
			System.out.println( "the string is alpha numeric");
		}

    }
}