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Anybody know how to use "enum" in Java?

 
Greenhorn
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The following code compiles, but I don't have any documentation on how to use the "enum" structure. I cant find any info on it in my books or Sun's language documentation...

class Test {

enum eone {
Plus { int operate(int x) { return ++x;} },
Minus { int operate(int x) { return --x;} }
}


public static void main (String[] args){
System.out.println("eone="+eone.Plus);
}

}
 
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