Java map example. Introduction Java 9 introduced the Map. Some might misunderstand the Map interface as a subtype of the Collections interface, but that is not true. Get started learning Python with DataCamp's free Intro to Python tutorial. it contains values based on the key. util package, it’s ideal for managing data associations where each key maps to a specific value. The Map interface is a member of the Java Collection framework. Returns: true if this map contains no key-value mappings. It assumes that you are familiar with basics of Java 8 Streams API. Maps are a key-value pair that allow you to access values based off a key. HashMap hm = new HashMap(); hm. gdei, zhlu, oqi7l, f63v, pdgk, 3sncu, mkqon, lqpm, 1d18fq, y0t2,