public class Solution {

	public static void main(String args[]) {

		testSolutions.lowercaseToUppercase('A');

		testSolutions.UppercaseTolowercase('a');

	}

}

class Solutions {

	/**

	 * @param character: a character

	 * @return: a character

	 */

	public char lowercaseToUppercase(char character) {

		// 转大写

		String UppercaseCharacter = String.valueOf(character).toUpperCase();

		System.out.println(UppercaseCharacter.charAt(0));

		return UppercaseCharacter.charAt(0);

	}

	public char UppercaseTolowercase(char character) {

		// 转小写

		String lowercaseCharacter = String.valueOf(character).toLowerCase();

		System.out.println(lowercaseCharacter.charAt(0));

		return lowercaseCharacter.charAt(0);

	}

}