How can I check if an element exists in a Set of items?

In an if statement in Java how can I check whether an object exists in a set of items. E.g. In this scenario i need to validate that the fruit will be an apple, orange or banana.

if (fruitname in ["APPLE", "ORANGES", "GRAPES"]) {
    //Do something
}

It's a very trivial thing but I couldn't figure out a short and concise way to accomplish this.