代码如下
分别是enum和testclass两个java文件

package cs121assignment1; public enum Food { APPLE("fruit", 55), BANANA("fruit", 80), CARROT("vegetable", 60); private final String catagory; //vegetable or fruit private final int calorie; Food(String catagory, int calorie){ this.catagory = catagory; this.calorie = calorie; } public int getCalorie(){ return calorie; } public String getCatagory(){ return catagory; } }

package cs121assignment1; public class TestFood { public static void main(String[] args){ System.out.println("All foods:"); for(Food food : Food.values()){ System.out.printf("%s, catagory: %s, calorie: %d kilocalorie each\n", food, food.getCatagory(), food.getCalorie()); } }

eclipse中运行结果如下：

但是用命令行执行javac的时候显示如下：