Character包装类

package com.shujia.day12;

/*
    Character:是基本数据类型char的包装类
    成员方法：
        public static boolean isUpperCase(char ch)  判断是否为大写
        public static boolean isLowerCase(char ch)  判断是否为小写
        public static boolean isDigit(char ch)  // 判断字符内容是否是数字
        public static char toUpperCase(char ch)     转大写
        public static char toLowerCase(char ch)      转小写


 */
public class CharacterDemo1 {
    public static void main(String[] args) {
//        Character c1 = 'a';
//        Character c2 = new Character('c');

        System.out.println(Character.isUpperCase('A'));
        System.out.println(Character.isLowerCase('A'));
        System.out.println(Character.isDigit('q'));

        System.out.println(Character.toUpperCase('a'));
        System.out.println(Character.toLowerCase('A'));

    }
}