刚学java到switch-case，练习输出成功.

import java.util.Scanner;
class Shu{
	public static void main(String[] args){
		Scanner m= new Scanner(System.in);
		System.out.println("请输入需要转换的字符：");
		    //char n1 =m.nextChar();
		    String b1 = m.next();
		    String a1=" ";
		switch(b1){
		    case "a":
			    a1 = "A";
			    break;
		    case "b":
			    a1 = "B";
			    break;
		    case "c":
			    a1 = "C";
		default:
			System.out.println("other");	

		}
		System.out.println(a1);
	}

}