1. Java枚举示例
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public enum Language {
JAVA,
PYTHON,
NODE,
NET,
RUBY
}
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6 ]* {* L# D+ e9 O- a1 r- x 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");
}
}
}
3 l* Z) u1 y7 Y8 \* \1 Z 输出量:Welcome Java3 ` L( p" t# a7 s: o9 _
3.与开关比较: L9 p: G2 y3 c& ^" Z
另外,您可以将枚举值与switch语句进行比较。8 U6 D$ a2 @8 T; O4 e! m" G0 `& s1 x
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;
}
}
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输出量:Welcome Python
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