Jan 8, 2024 · Java 9 introduced the Map.of () method, which makes it easier to create immutable maps, and the Map.ofEntries () method, which has slightly different functionality.

The Map interface provides three collection views, which allow a map's contents to be viewed as a set of keys, collection of values, or set of key-value mappings.

Feb 3, 2020 · The Map.of and Map.ofEntries are static factory methods that return unmodifiable Map containing specified mapping. The Map.of and Map.ofEntries are the static factory …

Jul 12, 2025 · Java 9 feature - Map.of () method In Java 9, Map.of () was introduced which is a convenient way to create instances of Map interface. It can hold up to 10 key-value pairs.

Dec 3, 2016 · My goal is to create a map of maps so that I can retrieve info of the outer map by its key and then access its "inner" maps by their keys. However, when I got each inner map, the …

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Sep 15, 2025 · A comprehensive guide to mastering Java's Map interface with practical examples and real-world... Tagged with beginners, algorithms, tutorial, java.

Jul 1, 2024 · Learn to create an immutable or unmodifiable Map using the factory methods added in Java 9 and other versions (Java 8 to Java 21) with examples.

Dec 24, 2024 · Map.of() is a great tool for its intended purpose – creating small, immutable maps quickly and easily. But it's not a universal solution.

Map.of () is a static factory method introduced in Java 9 that allows you to create immutable maps conveniently. It provides a simple way to initialize a map with values without needing to create …