请问这个怎么运行不成? enum Season{ 春季,夏季,秋季,冬季 } public class Example3_4{ public static void main(String args[]){ int x=96,y=1; Season season=Season.春季; switch(x+y){ case 1: System.out.println(x+y); break; case'a': System.out.println(x+y); case 10: System.out.println(x+y); break; default:System.out.println("没有般配的"+(x+y)); } switch(season){ case 冬季: System.out.println("隆冬腊月"); case 春季: System.out.println("春天种下种子"); case 秋季: System.out.println("秋天收获果实"); case 夏季: System.out.println("暑假真好"); } } }