简单枚举类型——植物与颜色

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.
 

Example Input

blue
yellow
purple

Example Output

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

Hint

 请用枚举类型实现。 

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
while(in.hasNext()){
String a = in.nextLine();
Color color = new Color(a);
color.show();
}
in.close();
}
}
class Color{
String a;
public Color(String a){
this.a = a;
}
public void show(){
if(a.compareTo("red")==0)
System.out.println("Rose are red.");
else if(a.compareTo("orange")==0)
System.out.println("Poppies are orange.");
else if(a.compareTo("yellow")==0)
System.out.println("Sunflower are yellow.");
else if(a.compareTo("green")==0)
System.out.println("Grass are green.");
else if(a.compareTo("blue")==0)
System.out.println("Bluebells are blue.");
else if(a.compareTo("violet")==0)
System.out.println("Violets are violet.");
else
System.out.println("I don't know about the color " + a + ".");
}
}