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    <p>The reason that this doesn't work is that your <code>if</code> statements are testing whether the array that enumerates all <code>RandomNumbers</code> instances is equal to some <code>String</code>. Of course, it never could be. When you call <code>randN.values()</code>, you are actually invoking the static method <code>RandomNumbers.values()</code>, the same method you used in your <code>getRandom()</code> method. If you want a string that you can compare, <code>randN.name()</code> would work, but it's really not a good idea.</p> <p>If you insist on comparing something, you should use an identity comparison, like this:</p> <pre><code>int num; /* Notice I'm not prematurely assigning meaningless garbage here. */ if (randN == RandomNumbers.ONE) num = 1; else if(randN == RandomNumbers.TWO) num = 2; else if(randN == RandomNumbers.THREE) num = 3; else throw new IllegalArgumentException("Unrecognized RandomNumber: " + randN); </code></pre> <p>The next step forward would be to use a <code>switch</code> statement:</p> <pre><code>int num; switch(randN) { case ONE: num = 1; break; case TWO: num = 2; break; case THREE: num = 3; break; default: throw new IllegalArgumentException(); } </code></pre> <p>You aren't making good use of an enum. Here's an approach that takes full advantage of an <code>enum</code> type:</p> <pre><code>public enum RandomNumber { ONE(1), TWO(2), THREE(3); private final int value; private RandomNumber(int value) { this.value = value; } public int getValue() { return value; } public static RandomNumber roll() { RandomNumber[] values = values(); int idx = ThreadLocalRandom.current().nextInt(values.length); return values[idx]; } public static void main(String... argv) { RandomNumber num = RandomNumber.roll(); System.out.printf("The random number is %s (%d).%n", num, num.getValue()); } } </code></pre>
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    1. POHow to Generate Random Numbers using ENUM in Java
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    1. COThanks Erickson. I've tried your first solution and it worked. I was not comparing the right value I understand. I will now try the last two techniques you've shown. Thank you.
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    2. COThe last solution shows the following compile time error message: RandomNumber2.java:3: error: constructor RandomNumber2 in enum RandomNumber2 cannot be applied to given types; ONE(1), ^ required: no arguments found: int reason: actual and formal argument lists differ in length
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    3. CODid you copy and paste the code? I think the problem is due to your renaming of the type, and perhaps forgetting to update the name everywhere, or perhaps you didn't accurately copy the constructor, etc. The code in my answer is lacking only imports.
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