Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.Iterator;

public class Main {
    public static <E> E getOnlyElement(Iterable<E> iterable) {
        Iterator<E> iterator = iterable.iterator();

        if (!iterator.hasNext()) {
            throw new RuntimeException("Collection is empty");
        }

        E element = iterator.next();

        if (iterator.hasNext()) {
            throw new RuntimeException("Collection contains more than one item");
        }

        return element;
    }
}