枚举类enum - ,分隔 - 红蓝/春夏秋冬

迭代for循环

enum Color
{
    RED, GREEN, BLUE;
}
public class MyClass {
  public static void main(String[] args) {
    for (Color myVar : Color.values()) {
      System.out.println(myVar);
    }
  }
}

switch

enum Color
{
    RED, GREEN, BLUE;
}
public class MyClass {
  public static void main(String[] args) {
    Color myVar = Color.BLUE;
    switch(myVar) {
      case RED:
        System.out.println("红色");
        break;
      case GREEN:
         System.out.println("绿色");
        break;
      case BLUE:
        System.out.println("蓝色");
        break;
    }
  }
}