Hash table based implementation of the Map interface. This implementation provides all of the optional map operations, and permits null values and the null key. (The HashMap class is …

Nov 27, 2025 · A HashMap is a part of Java’s Collection Framework and implements the Map interface. It stores elements in key-value pairs, where, Keys are unique. and Values can be …

All HashMap Methods A list of all HashMap methods can be found in the table below. Some methods use the type of the HashMap's entries as a parameter or return value. The type of the …

Jan 16, 2025 · In this tutorial, we’ll see how to use HashMap in Java, and we’ll look at how it works internally. A class very similar to HashMap is Hashtable. Please refer to a couple of our …

In this reference page, you will find all the hashmap methods available in Java. For example, if you need to add an element to the hashmap, use the put () method.

Jul 21, 2025 · This blog post has provided a detailed overview of HashMap methods in Java, from basic usage to advanced best practices. With this knowledge, you should be well - equipped to …

Dec 5, 2024 · We can create HashMap using different ways, specific to the requirements. For example, we can create an empty HashMap containing no key-value pairs initially. Later, we …