Count Uppercase, Lowercase, special character, and numeric values

• We can find a total number of Uppercase characters,Lowercase characters,special characters and number of digits in a given string in java by using Character class like below:

Program:

public class countDifferentCharacters {

    public static void main(String[] args) {
        
    String str = "KEEP123$%^&learn";

    char[] s = str.toCharArray();

    int digits = 0, letters = 0, upperCase = 0, alphabets = 0, specialCharacter = 0;
        for (char ch : s) {
            if (Character.isDigit(ch)) {
                digits++;
            }
            if (Character.isLetter(ch)) {
                letters++;
            }
            if (Character.isUpperCase(ch)) {
                upperCase++;
            }
            if (Character.isLowerCase(ch)) {
                alphabets++;
            }
            if (!Character.isDigit(ch) && !Character.isLetter(ch)) {
                specialCharacter++;
            }
        }
        System.out.println("digits=" + digits);
        System.out.println("letters=" + letters);
        System.out.println("upperCase=" + upperCase);
        System.out.println("alphabets=" + alphabets);
        System.out.println("specialCharacter=" + specialCharacter);
    }
}

Output:

Count Uppercase, Lowercase, special character and numeric values
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