public class FirstLetterUppercase {		public static void main(String[] args){		System.out.println(new FirstLetterUppercase().upperFirstLatter("letter"));		System.out.println(new FirstLetterUppercase().upperFirstLatter2("letter"));、
                

	}  	/**	 * 方法一	 * @param letter	 * @return	 */	public String upperFirstLatter(String letter){		char[] chars = letter.toCharArray();		if(chars[0]>=‘a‘ && chars[0]<=‘z‘){			chars[0] = (char) (chars[0]-32);		}		return new String(chars);	}		/**	 * 方法二	 * @param letter	 * @return	 */	public String upperFirstLatter2(String letter){		return letter.substring(0, 1).toUpperCase()+letter.substring(1);	}		}