JavaScript Map and Set
Till now, we’ve learned about the following complex data structures: Objects are used for storing keyed collections. Arrays are used for storing ordered collections. But […]
Map
Map Serialization and Deserialization with Jackson
1. Overview In this article, we’ll look at serialization and deserialization of Java maps using Jackson. We’ll illustrate how to serialize and deserialize Map<String, String>, Map<Object, String>, and Map<Object, Object> to and […]
Map to String Conversion in Java
1. Overview In this tutorial, we’ll focus on conversion from a Map to a String and the other way around. First, we’ll see how to achieve these using core […]
How to Convert List to Map in Java
1. Overview Converting List to Map is a common task. In this tutorial, we’ll cover several ways to do this. We’ll assume that each element of the List has an identifier that […]
Convert a Map to an Array, List or Set in Java
1. Overview This short article will show how to convert the values of a Map to an Array, a List or a Set using plain Java as well as a quick Guava based example. 2. Map […]
How to Store Duplicate Keys in a Map in Java?
1. Overview In this tutorial, we’re going to explore the available options for handling a Map with duplicate keys or, in other words, a Map which allows storing multiple […]
Java Map With Case-Insensitive Keys
1. Overview Map is one of the most common data structures in Java, and String is one of the most common types for a map’s key. By default, a map […]
Immutable Map Implementations in Java
1. Overview It is sometimes preferable to disallow modifications to the java.util.Map such as sharing read-only data across threads. For this purpose, we can use either an […]
