电梯直达

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发表于 2011-11-02 16:48 |只看该作者 |倒序浏览

java enum

1 package com.karl.test;
2
3 public class TestEnum {
4
5 public enum ColorSelect{
6 red,green,yellow,blue;
7 }
8
9 public enum Season{
10 spring,summer,fall, winter;
11 private final static String location = "Phoenix";
12
13 public static Season getBest(){
14 if(location.endsWith("Phoenix"))
15 return winter;
16 else
17 return summer;
18 }
19 }
20
21 public enum Temp{
22 absoluteZero(-459), freezing(32), boiling(212), paperBurns(451);
23 private final int value;
24 public int getValue(){
25 return value;
26 }
27 Temp(int value){
28 this.value = value;
29 }
30 }
31
32
33 public static void main(String[] args) {
34 ColorSelect m = ColorSelect.blue;
35 switch(m){
36 case red:
37 System.out.println("color is red");
38 break;
39 case green:
40 System.out.println("color is green");
41 break;
42 case yellow:
43 System.out.println("color is yellow");
44 break;
45 case blue:
46 System.out.println("color is blue");
47 break;
48 }
49
50 for(ColorSelect c : ColorSelect.values()){
51 System.out.println(c);
52 }
53
54 System.out.println("total " + ColorSelect.values().length + " in ColorSelect.");
55
56 System.out.println("the position of blue in ColorSelect is " + ColorSelect.blue.ordinal());
57
58 System.out.println("compare red to green " + ColorSelect.red.compareTo(ColorSelect.green));
59
60 System.out.println("Season.getBest()= " + Season.getBest());
61
62 for (Temp t : Temp.values()) {
63 System.out.println("The value of t is " + t.getValue());
64 }
65
66 }
67 }