1. Java枚举示例3 G- ]: W/ M! M$ J. f5 h
package com.mkyong.java
public enum Language {
JAVA,
PYTHON,
NODE,
NET,
RUBY
}
" H3 j3 r6 \0 o* v% f2.与==比较
7 X$ G, \: d# { 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");
}
}
}
. R( S9 V% O3 b D! u6 ?# T3 X& @ 输出量:Welcome Java# z7 @2 q4 d! Z2 y \; v5 i
3.与开关比较& X) D" w) V& k$ M/ U8 q
另外,您可以将枚举值与switch语句进行比较。
, n$ r! O1 U" B# K" ~3 fpackage 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;
}
}
}
$ d5 W l/ h3 ^, m! [7 U/ L, z5 R 输出量:Welcome Python2 [! K( z" `5 K! h
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