switchdemo2.java

来自「《Java语言程序设计》源代码 很好的JAVA入门的好的代码」· Java 代码 · 共 33 行

public class SwitchDemo2 {
        public static void main(String[] args) {
                int month = 6;
                int year = 2003;
                int numDays = 0;
                switch (month) {
                        case 1:
                        case 3:
                        case 5:
                        case 7:
                        case 8:
                        case 10:
                        case 12:
                                numDays = 31;
                                break;
                        case 4:
                        case 6:
                        case 9:
                       case 11:
                               numDays = 30;
                                break;
                       case 2:
                                if ( ((year % 4 == 0) && !(year % 100 == 0)) || (year % 400 == 0) )
                                       numDays = 29;
                     else
                             numDays = 28;
                      break;
                }
                System.out.println("Year : "+ year + " ,  month  :  "+month);
                System.out.println("Number of Days = " + numDays);
          }
}