简单枚举类型——植物与颜色（Java）

简单枚举类型——植物与颜色
Time Limit: 1000 ms Memory Limit: 65536 KiB
Problem Description
请定义具有red, orange, yellow, green, blue, violet六种颜色的枚举类型color，根据输入的颜色名称，输出以下六种植物花朵的颜色：
Rose(red), Poppies(orange), Sunflower(yellow), Grass(green), Bluebells(blue), Violets(violet)。如果输入的颜色名称不在枚举类型color中，例如输入purple，请输出I don’t know about the color purple.

Input
输入数据有多行，每行有一个字符串代表颜色名称，颜色名称最多30个字符，直到文件结束为止。
Output
输出对应颜色的植物名称，例如：Bluebells are blue. 如果输入的颜色名称不在枚举类型color中，例如purple, 请输出I don’t know about the color purple.

Sample Input

blue
yellow
purple

Sample Output

Bluebells are blue.
Sunflower are yellow.
I don’t know about the color purple.

Hint
请用枚举类型实现。
Source
lxh

import java.text.DecimalFormat;
import java.util.*;

import java.util.Scanner;

enum Color{
    red("Rose","red"),
    orange("Poppies","orange"),
    yellow("Sunflower","yellow"), 
    green("Grass","green"),
    blue("Bluebells","blue"),
    violet("Violets","violet");
    String name,color;
    Color(String name,String color){
        this.name = name;
        this.color = color;
    }
    public String toString() {
        return name+" are "+color+".";
    }
}

public class Main {
    public static void main(String args[]){
        Scanner input = new Scanner(System.in);
        int flag = 30;
        while(input.hasNext() && flag-- != 0) {
            String str = input.next();
            try {
                Color co = Color.valueOf(str);
                System.out.println(co.toString());
            }catch(Exception e) {
                System.out.println("I don't know about the color "+str+".");
            }

        }
        input.close();
    }
}