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How to Optimize Memory Usage and Performance for large HashSet Datasets in Java?
Last Updated: 05 April 2024
HashSet is mainly used for the data structures in Java offers fast access and prevents duplicate elements. So, the size of the dataset will be improved and it can raise me...
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Java Collection Exercise
Last Updated: 12 March 2024
The Java Collection framework is a fundamental part of the Java programming language, It covers a major part of Java and acts as a prerequisite for many Advanced Java Topi...
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How to Convert List of Lists to HashSet in Java?
Last Updated: 26 February 2024
In Java, Collections like lists, and sets play a crucial role in converting and manipulating the data efficiently. The Conversion of a List of Lists into a HashSet is main...
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How to Create Subsets of a HashSet based on Specific Criteria in Java?
Last Updated: 20 February 2024
In Java, HashSet provides a dynamic collection of unique elements. Sometimes, we may need to create subsets of a HashSet based on specific criteria. In this article, we wi...
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How to Serialize and Deserialize a HashSet in Java?
Last Updated: 24 April 2025
Serialization is the technique of converting an object's state into a byte stream. The main purpose of serialization is to save the state of an object so that it can be re...
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How to Create a HashSet with a Custom Initial Load Factor in Java?
Last Updated: 14 February 2024
Java HashSet is a simple data structure provided by the Java Collection Framework that provides efficient storage and enables the storage of unique objects. One of the par...
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How to Convert List of Lists to HashSet in Java Using Lambda Expression?
Last Updated: 12 February 2024
A lambda expression is a short code block that accepts parameters and outputs a result. Similar to methods, lambda expressions can be used directly within the body of a me...
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How to Convert a HashSet to JSON in Java?
Last Updated: 24 April 2025
In Java, a HashSet is an implementation of the Set interface that uses a hash table to store elements. It allows fast lookups and does not allow duplicate elements. Elemen...
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How to Implement a Bidirectional Map Using Two HashSets in Java?
Last Updated: 07 February 2024
Bidirectional maps are also known as two-way maps or dual maps. These provide a convenient way to establish a relationship between keys and values in both directions. In J...
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Deep Copy of a HashSet in Java
Last Updated: 02 February 2024
HashSet is used to store a unique set of values in Java. It is a class that stores values and provides efficient access. As we know Java uses call-by-reference. So, if we ...
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How to Iterate Over a HashSet Without an Iterator in Java?
Last Updated: 01 February 2024
In Java, we can iterate over a HashSet without using an Iterator. For this, we need two methods. We can directly loop through the elements of the HashSet.In this article, ...
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How to Create a HashSet With a Predefined Capacity in Java?
Last Updated: 01 February 2024
In Java, we can create HashSet with a predefined capacity by creating a constructor and passing the capacity as a parameter to it. We have to initialize the capacity using...
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Maven Project - HashMap and HashSet Collections with JUnit Testing
Last Updated: 26 April 2025
In many software, we will be working with HashMap and HashSet and always there is confusion exists that when to use HashMap and when to use HashSet. As a sample project, a...
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Get Enumeration over Java HashSet
Last Updated: 03 March 2021
The HashSet class implements the Set interface, backed by a hash table which is a HashMap instance. There is no assurance as to the iteration order of the set, which impli...
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Java Program to Implement HashSet API
Last Updated: 11 February 2021
The HashSet class implements the Set interface, backed by a hash table which is actually a HashMap instance. No guarantee is made as to the iteration order of the set whic...
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