blocks|key|1415118|text|如果你想要enum的属性，你需要这样定义它：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1415119|public+enum+Foo+{
++++BAR+(0),
++++BAZ+(1),
++++FII+(10);

++++private+final+int+index;+++

++++Foo(int+index)+{
++++++++this.index+=+index;
++++}

++++public+int+index()+{+
++++++++return+index;+
++++}

}|code-block|syntax|javascript|1415120|你可以这样使用它：|1415121|public+static+void+main(String[]+args)+{
++++for+(Foo+f+:+Foo.values())+{
+++++++System.out.printf("%25s+has+index+%25d%25n",+f,+f.index());
++++}
}|1415122|需要认识到的是，enum只是创建类的快捷方式，因此您可以向该类添加任何您想要的属性和方法。|1415123|如果您不想在enum上定义任何方法，可以更改成员变量的作用域并将其设置为public，但这不是它们在example+on+the+Sun+website中所做的事情。|1415124|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/j2se/1.5.0/docs/guide/language/enums.html^0|5|4|0|0|0|0|8|4|0|6|4|10|6|1E|Q|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|14|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|19|8|@$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@$9|1E|A|1F|1|1G]]|E|$]]|$1|S|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

If you want attributes for your <code>enum</code> you need to define it like this:

<pre><code>public enum Foo {
 BAR (0),
 BAZ (1),
 FII (10);

 private final int index; 

 Foo(int index) {
 this.index = index;
 }

 public int index() { 
 return index; 
 }

}
</code></pre>

You'd use it like this:

<pre><code>public static void main(String[] args) {
 for (Foo f : Foo.values()) {
 System.out.printf("%s has index %d%n", f, f.index());
 }
}
</code></pre>

The thing to realise is that <code>enum</code> is just a shortcut for creating a class, so you can add whatever attributes and methods you want to the class.

If you don't want to define any methods on your <code>enum</code> you could change the scope of the member variables and make them <code>public</code>, but that's not what they do in the <a href="http://java.sun.com/j2se/1.5.0/docs/guide/language/enums.html" rel="noreferrer">example on the Sun website</a>.

blocks|key|1415173|text|听起来你想要这样的东西：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1415174|public+enum+Foo+{
++++Bar(0),
++++Baz(1),
++++Fii(10);

++++private+int+number;

++++public+Foo(int+number)+{
+++++++this.number+=+number;
++++}

++++public+int+getNumber()+{
++++++++return+number;
++++}
}|code-block|syntax|javascript|1415175|对于初学者来说，Sun的Java+Enum+Tutorial将是一个学习更多信息的好地方。|offset|length|1415176|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/docs/books/tutorial/java/javaOO/enum.html^0|0|0|C|I|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Sounds like you want something like this:

<pre><code>public enum Foo {
 Bar(0),
 Baz(1),
 Fii(10);

 private int number;

 public Foo(int number) {
 this.number = number;
 }

 public int getNumber() {
 return number;
 }
}
</code></pre>

For starters, Sun's <a href="http://java.sun.com/docs/books/tutorial/java/javaOO/enum.html" rel="nofollow noreferrer">Java Enum Tutorial</a> would be a great place to learn more.

blocks|key|1415205|text|public+enum+Foo+{
++++Bar(0),
++++Baz(1),
++++Fii(10);

++++private+final+int+someint;
++++Foo(int+someint)+{
++++++++this.someint+=+someint;
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1415206|在Java中，枚举与其他类非常相似，但是Java编译器知道在不同的情况下需要稍微区别对待。因此，如果您想要它们中的数据，您需要有一个用于数据的实例变量和一个适当的构造函数。|unstyled|1415207|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>public enum Foo {
 Bar(0),
 Baz(1),
 Fii(10);

 private final int someint;
 Foo(int someint) {
 this.someint = someint;
 }
}
</code></pre>

In Java enums are very similar to other classes but the the Java compiler knows to treat a little differently in various situations. So if you want data in them like you seem to you need to have an instance variable for the data and an appropriate constructor.

blocks|key|1200200|text|如果您有一个连续的值范围，并且您所需要的只是整数值，那么您只需最小限度地声明枚举：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1200201|public+enum+NUMBERZ+{
++++++++ZERO,+ONE,+TWO
}|code-block|syntax|javascript|1200202|然后获取int值，如下所示：|1200203|int+numberOne+=+NUMBERZ.ONE.ordinal();|1200204|但是，如果您需要一个不连续的范围(如您的示例中，您从1跳到10)，那么您将需要编写自己的枚举构造函数来设置您自己的成员变量，并为该变量提供一个get方法，如此处的其他答案中所述。|1200205|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

If you have a contiguous range of values, and all you need is the integer value, you can just declare the enum minimally:

<pre><code>public enum NUMBERZ {
 ZERO, ONE, TWO
}
</code></pre>

and then obtain the int value as follows:

<pre><code>int numberOne = NUMBERZ.ONE.ordinal();
</code></pre>

However, if you need a discontiguous range (as in your example, where you jump from 1 to 10) then you will need to write your own enum constructor which sets your own member variable, and provide a get method for that variable, as described in the other answers here.

What's the Java equivalent of C#'s:

<pre><code>enum Foo
{
 Bar = 0,
 Baz = 1,
 Fii = 10,
}
</code></pre>

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