Java program to find the percentage of uppercase, lowercase, digits and special characters in a string

File: CharacterPercentage .java

import java.text.DecimalFormat;
 
public class CharacterPercentage {
 
	static void charPercentage(String input) {
		int totalChar = input.length();
		int upperCase = 0;
		int lowerCase = 0;
		int digits = 0;
		int others = 0;
		for (int i = 0; i < input.length(); i++) {
			char ch = input.charAt(i);
			if (Character.isUpperCase(ch)) {
				upperCase++;
			}
			else if (Character.isLowerCase(ch)) {
				lowerCase++;
			}
			else if (Character.isDigit(ch)) {
				digits++;
			}
			else {
				others++;
			}
		}
		double upperCaseLetterPercentage = (upperCase * 100) / totalChar;
		double lowerCaseLetterPercentage = (lowerCase * 100) / totalChar;
		double digitsPercentage = (digits * 100) / totalChar;
		double otherCharPercentage = (others * 100) / totalChar;
 
		DecimalFormat format = new DecimalFormat("##.##");
		System.out.println("In '" + input + "' : ");
		System.out.println("Uppercase letters are " + format.format(upperCaseLetterPercentage) + "% ");
		System.out.println("Lowercase letters are " + format.format(lowerCaseLetterPercentage) + "%");
		System.out.println("Digits Are " + format.format(digitsPercentage) + "%");
		System.out.println("Other Characters Are " + format.format(otherCharPercentage) + "%");
 
	}
	public static void main(String[] args) {
		charPercentage("India is my country 100%");
	}
 
}

Output:

In 'India is my country 100%' : 
Uppercase letters are 4% 
Lowercase letters are 62%
Digits Are 12%
Other Characters Are 20%

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