Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Collection;

import java.util.Map;

public class Main {

    public static boolean hasUniqueObject(Collection collection) {
        if (isEmpty(collection))
            return false;
        boolean hasCandidate = false;
        Object candidate = null;
        for (Object elem : collection) {
            if (!hasCandidate) {
                hasCandidate = true;
                candidate = elem;
            } else if (candidate != elem)
                return false;
        }
        return true;
    }

    public static boolean isEmpty(Collection collection) {
        return collection == null || collection.isEmpty();
    }

    public static boolean isEmpty(Map map) {
        return map == null || map.isEmpty();
    }
}