1. Java枚举示例
% {8 I9 I3 f6 p4 wpackage com.mkyong.java
public enum Language {
JAVA,
PYTHON,
NODE,
NET,
RUBY
}
2 l% ^, O2 ?! L$ s! ]2.与==比较
2 {! @! }; e" c: w8 w( q7 ]) _ 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");
}
}
}
7 a1 L9 ? d8 [+ K9 Q" d 输出量:Welcome Java3 D, `5 C, H1 J
3.与开关比较3 ?) q- T) [: r: R
另外,您可以将枚举值与switch语句进行比较。& v' c0 d9 ~8 Q; W/ W7 k
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;
}
}
}
% f s0 U# f+ l8 D @6 C 输出量:Welcome Python/ k" o* j) K& I* [4 Q; S& s
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