遍历

枚举类：

public enum Color{
    RED("红色"),GREEN("绿色",1),BLACK("黑色",2);
    
    private String name;
    private Integer index;
    
    //构造函数
    private Color(String name, Integer index){
        this.name = name;
        this.index = index;
    }
    
    //构造函数
    private Color(String name){
        this.name = name;
    }
    
    public String getName(){
        return name;
    }
    public void setName(String name){
        this.name = name;
    }
    public Integer getIndex(){
        return index;
    }
    public void setIndex(Integer index){
        this.index = index;
    }
}

测试类

public class TestColor{
    public static void main(String[] args){
       System.out.println(Color.BLACK.getName());//黑色
       System.out.println(Color.BLACK.getIndex());//2
       System.out.println(Color.valueOf("RED"));//RED
       //遍历枚举的值
       for(Color color:Color.values()){
           System.out.println( color + "name:" + color.getName() + "index:" + color.getIndex() );
          /* REDname:红色index:null
           GREENname:绿色index:1
           BLACKname:黑色index:2*/
       }
    }
}

反射获取值

枚举类：

public enum Color{
    RED,GREEN,BLACK;
}

测试类：

public class TestColor{
    public static void main(String[] args){
        Class cla = Color.class;
        System.out.println(cla.isEnum());//true
        Object object = null;
        Object[] objArray = cla.getEnumConstants();
        for(Object obj:objArray){
            System.out.println(obj.toString());//RED GREEN BLACK
            if(obj.toString().equals("RED")){
                object = obj;
            }
        }
        System.out.println(object.toString());//RED
    }
}