CaseConverter.java

package qub.ac.uk.practical.week5;

// import scanner
import java.util.Scanner;

public class PracticalQuestionTwo {

	/**
	 * A method for calling a case converter method
	 * @param args
	 */
	public static void main(String[] args) {
		// Declaring scanner
		Scanner scanner = new Scanner(System.in);
		
		// Declaring variables
		String letter;
		char firstChar;
		
		// Getting and using user input
		System.out.println("Please input a character: ");
		letter = scanner.nextLine();
		
		firstChar = convertFromUpperToLower(letter.charAt(0));
		
		// Closing scanner
		scanner.close();
		
		// Printing char with case corrected
		System.out.println(firstChar);

	}

	/**
	 * A method which takes an upper case character
	 * and (if required) converts it to lower case.
	 * @return 
	 */
	
	public static char convertFromUpperToLower(char firstChar){
		
		if (Character.isLowerCase(firstChar)){
			return firstChar;
		} else {
			return Character.toLowerCase(firstChar);
		}
		
	}
}