Java分支结构switch

public class Test {
  public static void main(String[] args) {
    int num = 2;
    switch(num) {
      case 1:
        System.out.println("one");
        break;
      case 2:
        System.out.println("two");
        break;
      case 3:
        System.out.println("three");
        break;
      default:
        System.out.println("default");
    }
  }
}