1. Java枚举示例
- a6 a5 D3 [- spackage com.mkyong.java
public enum Language {
JAVA,
PYTHON,
NODE,
NET,
RUBY
}
8 v' f' D5 n5 S3 Z, y/ p8 o2.与==比较6 S& |) m' Z% u) q8 ?% ]
将枚举值与==运算符进行比较的示例。package com.mkyong.java
public class Test {
public static void main(String[] args) {
// Covert string to enum
//Language enumObj = Language.valueOf("java".toUpperCase());
Language enumObj = Language.JAVA;
if (enumObj == Language.JAVA) {
System.out.println("Welcome Java");
} else if (enumObj == Language.NET) {
System.out.println("Welcome .Net");
} else if (enumObj == Language.NODE) {
System.out.println("Welcome Node JS");
} else if (enumObj == Language.PYTHON) {
System.out.println("Welcome Python");
} else if (enumObj == Language.RUBY) {
System.out.println("Welcome Ruby");
} else {
System.out.println("Hello World");
}
}
} * k) l! N6 n) T# N8 X
输出量:Welcome Java; h4 k& P9 b. I& c
3.与开关比较
/ C# ?. ]2 t! L 另外,您可以将枚举值与switch语句进行比较。; _1 M8 w+ ~. `9 H( q
package com.mkyong.java
public class Test {
public static void main(String[] args) {
Language enumObj = Language.PYTHON;
switch (enumObj) {
case JAVA:
System.out.println("Welcome Java");
break;
case NET:
System.out.println("Welcome .Net");
break;
case NODE:
System.out.println("Welcome Node JS");
break;
case PYTHON:
System.out.println("Welcome Python");
break;
case RUBY:
System.out.println("Welcome Ruby");
break;
default:
System.out.println("Hello World");
break;
}
}
}
% y! M0 k5 |, Q( b. Z 输出量:Welcome Python
5 L% L4 d# d. ^6 f r1 s# u, T1 Y |