JavaSE8基础 Character.toXXX 大写字母与小写字母的转换

package jizuiku3;

public class Demo101 {
	public static void main(String[] args) {
		char c = ‘a‘;
		char c2 = Character.toUpperCase(c);
		System.out.println(c2);

		char d = ‘A‘;
		char d2 = Character.toLowerCase(d);
		System.out.println(d2);
		
		//上合法，下则反
		
		char e = ‘1‘;
		char e2 = Character.toLowerCase(e);
		System.out.println(e2);
		
		char f = ‘!‘;
		char f2 = Character.toLowerCase(f);
		System.out.println(f2);
		
	}
}