direction.java

一个电梯模拟程序

package lift.component.type;

public enum Direction {
    UP, DOWN, NO_DIRECTION;
    
    private static Direction dir = NO_DIRECTION;
    
    public static void setDirectionUp(){
        dir = UP;
    }
    
    public static void setDirectionDown(){
        dir = DOWN;
    }
    
    public static void resetDirection(){
        dir = NO_DIRECTION;
    }
    
    public static Direction getDirection(){
        return dir;
    }
    
    public String toString(){
        String temp;
        switch(this.ordinal()){
            case 0:
                return "↑";
            case 1:
                return "↓";
        }
        return "null";
    }
}