java枚举个人使用全面解析

package com.wpw.springbootjuc.enum002;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.experimental.Accessors;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

@AllArgsConstructor
@Getter
@Accessors(chain = true)
public enum ColorEnum {
    YELLO(0, "黄色"),
    BLUE(1, "蓝色"),
    RED(2, "红色"),
    WHITE(3, "白色"),
    BLACK(4, "黑色"),
    GREEN(5, "绿色");
    /**
     * code码
     */
    private Integer code;
    /**
     * 颜色名称
     */
    private String name;

    /**
     * @return 获取颜色名称数据集合
     */
    private static List<String> ofColorNameList() {
        List<String> colorNameList = new ArrayList<>();
        for (ColorEnum c : ColorEnum.values()) {
            colorNameList.add(c.getName());
        }
        return colorNameList;
    }

    /**
     * @return 获取颜色状态码数据集合
     */
    private static List<Integer> ofColorCodeList() {
        List<Integer> colorCodeList = new ArrayList<>();
        for (ColorEnum c : ColorEnum.values()
        ) {
            colorCodeList.add(c.getCode());
        }
        return colorCodeList;
    }

    /**
     * 判断颜色名称是否相等
     *
     * @param colorName 颜色名称
     * @return true/false
     */
    private static boolean check(String colorName) {
        Objects.requireNonNull(colorName, "颜色名称不能为空");
        for (ColorEnum c : ColorEnum.values()) {
            if (colorName != null && c.getName().equals(colorName)) {
                return true;
            }
        }
        return false;
    }

    /**
     * 根据颜色名称获取所对应的code值
     *
     * @param colorName 颜色名称
     * @return 颜色所对应的code
     */
    public static int getColorCode(String colorName) {
        Objects.requireNonNull(colorName, "颜色名称不能为空");
        for (ColorEnum c : ColorEnum.values()) {
            if (colorName != null && colorName.equals(c.getName())) {
                return c.getCode();
            }
        }
        return -1;
    }

    /**
     * 根据颜色Code获取颜色名称
     *
     * @param colorCode 颜色Code
     * @return 颜色名称
     */
    public static String getColorName(Integer colorCode) {
        Objects.requireNonNull(colorCode, "状态码不能为空");
        preCheck(colorCode);
        for (ColorEnum c : ColorEnum.values()) {
            if (colorCode != null && colorCode != -1 && colorCode.equals(c.getCode())) {
                return c.getName();
            }
        }
        return null;
    }

    private static void preCheck(Integer colorCode) {
        if (colorCode == -1) {
            throw new IllegalArgumentException("颜色状态码不能为-1");
        }
    }

    public static void main(String[] args) {
        ofColorNameList().stream().forEach(x -> System.out.println(x));
        System.out.println();
        ofColorCodeList().stream().forEach(x -> System.out.println(x));
        boolean checkFlag = check("蓝色");
        System.out.println("checkFlag = " + checkFlag);
        String colorName = getColorName(0);
        System.out.println("colorName = " + colorName);
        int colorCode = getColorCode("红色");
        System.out.println("colorCode = " + colorCode);
        String colorName1 = getColorName(-1);
        System.out.println("colorName1 = " + colorName1);
    }
}