Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.util.Collection;

import java.util.NoSuchElementException;

public class Main {
    public static <T> T only(Collection<T> coll) {
        if (coll.size() != 1) {
            throw new NoSuchElementException("Collection has none or more than one elements");
        }
        return coll.iterator().next();
    }
}