1. Java枚举示例, W3 ~# L* o3 R5 o9 `& E
package com.mkyong.java
public enum Language {
JAVA,
PYTHON,
NODE,
NET,
RUBY
}
" Z, k7 q9 o I# I* T; [2.与==比较# _* s: A. h+ M
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");
}
}
}
/ |. A/ r. u0 v/ z 输出量:Welcome Java
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: c: J# J- d" {# ?( q 另外,您可以将枚举值与switch语句进行比较。0 G5 }. i, U8 T( Z& _
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;
}
}
} ' \% _4 g& T% g, Y
输出量:Welcome Python
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