java 中枚举类enum的values()方法的详解

public enum EnumDemoFirst { 
 
  RED(1,"hongse"),GREEN(2,"lvse"),YELLOW(3,"huangse"); 
 
  private int code; 
  private String msg; 
   
 
  private EnumDemoFirst(int ordinal, String name) { 
    this.code = ordinal; 
    this.msg = name; 
  } 
  public int getCode() { 
    return code; 
  } 
  public void setCode(int code) { 
    this.code = code; 
  } 
  public String getMsg() { 
    return msg; 
  } 
  public void setMsg(String msg) { 
    this.msg = msg; 
  } 
   
   
} 

public class EnumTest { 
 
  public static void main(String[] args) { 
    EnumDemoFirst[] values = EnumDemoFirst.values(); 
    for (EnumDemoFirst enumDemoFirst : values) { 
      System.out.println(enumDemoFirst + "--" + enumDemoFirst.getCode() + "--" + enumDemoFirst.getMsg()); 
      System.out.println("============="); 
    } 
  } 
} 

RED--1--hongse 
============= 
GREEN--2--lvse 
============= 
YELLOW--3--huangse 
=============