switchtest.java

一系列java小程序

class SwitchTest{
	public static void main(String[]  args) {
		char ch = args[0].charAt(0);
		switch (ch) {
			case ‘0’ : case ‘1’ : case ‘2’ : case’3’:
			case ‘4’ : case ‘5’ : case ‘6’ : case ‘7’:
			case ‘8’ : case ‘9’ : 
				System.out.println(
				“The character is digit ” +ch);
				break;
	case ‘a’ : case ‘b’ : case ‘c’ : case ‘d’:
	case ‘e’ : case ‘f’ : case ‘g’ : case ‘h’:
	case ‘i’ : case ‘j’: case ‘k’ : case ‘l’:
	case ‘m’ : case ‘n’ : case ‘o’ : case ‘p’:
	case ‘q’ : case ‘r’ : case ‘s’ : case ‘t’:
	case ‘u’ : case ‘v’ : case ‘w’ : case ‘x’:
	case ‘y’ : case ‘z’: 
		System.out.println(
		“The char is lowercase letter ” +ch);
		break;
        case ‘A’ : case ‘B’ : case ‘C’ : case ‘D’:
	case ‘E’ : case ‘F’: case ‘G’ : case ‘H’:
	case ‘I’ : case ‘J’ : case ‘K’ : case ‘L’:
	case ‘M’ : case ‘N’ : case ‘O’ : case ‘P’:
	case ‘Q’ : case ‘R’ : case ‘S’ : case ‘T’:
	case ‘U’ : case ‘V’ : case ‘W’ : case ‘X’:
	case ‘Y’ : case ‘Z’ : 
		System.out.println(
			“The char is uppercase letter ” +ch);
		break;
        default: System.out.println(“The character” +
			ch+” is neither a digit nor a letter.”);
		}
	}
}