A program for finding out the upper case letter in a string.

Exercise9_15.java

// A program for finding out the upper case letter in a string.

public class Exercise9_15 {
  public static void main(String[] args) {
		java.util.Scanner input = new java.util.Scanner(System.in);
		System.out.println("Please enter a string: ");
		String s1 = input.nextLine();
		int [] counts1 = countUpperCaseLetters(s1);
		for (int i = 0; i < counts1.length - 1; i++) {
			if (counts1[i] != 0) {
				System.out.println((char)('A' + i) + " appears " + counts1 [i] + ((counts1 [i] == 1) ? " time." : " times."));
			}
		}
	}

	// A method for counting upper case letters in a string.
	private static int[] countUpperCaseLetters(String s1) {
		int [] counts1 = new int[26];
		for (int i = 0; i < s1.length() - 1; i++) {
			if (Character.isUpperCase(s1.charAt(i))) {
				counts1 [s1.charAt(i) - 'A']++;
			}
		}
		return counts1;
	}
}