Apache Commons Collections
by Apache Software Foundation
Apache Commons Collections is a library of common Java classes, utilities, and data structures, designed to extend the capabilities of the Java Collections Framework.
Operating system: Windows
Publisher: Apache Software Foundation
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Apache Commons Collections
Introduction
The Apache Commons Collections (Commons Collections) library provides a rich set of data structures, algorithms and utilities designed to extend the Java Collections Framework. Commons Collections provides a variety of data structures, algorithms and utilities designed to extend the standard Java Collections Framework. It contains a number of classes and interfaces that extend the Java Collections Framework, providing additional functionality and allowing developers to work with collections in more powerful ways.
The Apache Commons Collections library includes the following features:
1. Bag: A Bag is a collection that can contain duplicate elements. It is similar to a Set, but allows for multiple occurrences of the same element.
2. BidiMap: A BidiMap is a map that preserves the order of the elements in both directions, so elements can be looked up by their values as well as their keys.
3. Buffer: A Buffer is a collection that stores elements in a "first in, first out" order. It is often used to implement queues and stacks.
4. CollectionUtils: CollectionUtils is a utility class that contains useful methods for manipulating collections.
5. Comparator: A Comparator is an interface that defines methods for comparing objects. It is used to define the ordering of elements in a collection.
6. IteratorUtils: IteratorUtils is a utility class that provides useful methods for working with Iterators.
7. ListOrderedMap: A ListOrderedMap is a Map that preserves the order of the elements. It is similar to a LinkedHashMap, but it also supports element ordering.
8. MultiMap: A MultiMap is a Map that allows for multiple values for a single key. It is similar to a HashMap, but it can store multiple values for a single key.
9. Predicate: A Predicate is an interface that defines a method for testing an object. It is used to filter elements from a collection.
10. SetUtils: SetUtils is a utility class that provides useful methods for working with Sets.
11. SortedBag: A SortedBag is a Bag that maintains the order of the elements. It is similar to a TreeSet, but it allows for multiple occurrences of the same element.
12. SortedMap: A SortedMap is a Map that maintains the order of the elements. It is similar to a TreeMap, but it allows for multiple entries with the same key.
13. TransformedCollection: A TransformedCollection is a Collection that applies a transformation to all of its elements. It is similar to a List, but it applies a transformation to all of its elements.
14. TypedCollection: A TypedCollection is a Collection that enforces a type on its elements. It is similar to a List, but it ensures that all of its elements are of the same type.
Conclusion
The Apache Commons Collections library provides a rich set of data structures, algorithms and utilities designed to extend the Java Collections Framework. It contains a number of classes and interfaces that extend the Java Collections Framework, providing additional functionality and allowing developers to work with collections in more powerful ways. By using the Apache Commons Collections library, developers can take advantage of the additional features and flexibility of the library to create powerful and efficient applications.
Introduction
The Apache Commons Collections (Commons Collections) library provides a rich set of data structures, algorithms and utilities designed to extend the Java Collections Framework. Commons Collections provides a variety of data structures, algorithms and utilities designed to extend the standard Java Collections Framework. It contains a number of classes and interfaces that extend the Java Collections Framework, providing additional functionality and allowing developers to work with collections in more powerful ways.
Apache Commons Collections provides a rich set of data structures and algorithms for manipulating and processing data.Features:
The Apache Commons Collections library includes the following features:
1. Bag: A Bag is a collection that can contain duplicate elements. It is similar to a Set, but allows for multiple occurrences of the same element.
2. BidiMap: A BidiMap is a map that preserves the order of the elements in both directions, so elements can be looked up by their values as well as their keys.
3. Buffer: A Buffer is a collection that stores elements in a "first in, first out" order. It is often used to implement queues and stacks.
4. CollectionUtils: CollectionUtils is a utility class that contains useful methods for manipulating collections.
5. Comparator: A Comparator is an interface that defines methods for comparing objects. It is used to define the ordering of elements in a collection.
6. IteratorUtils: IteratorUtils is a utility class that provides useful methods for working with Iterators.
7. ListOrderedMap: A ListOrderedMap is a Map that preserves the order of the elements. It is similar to a LinkedHashMap, but it also supports element ordering.
8. MultiMap: A MultiMap is a Map that allows for multiple values for a single key. It is similar to a HashMap, but it can store multiple values for a single key.
9. Predicate: A Predicate is an interface that defines a method for testing an object. It is used to filter elements from a collection.
10. SetUtils: SetUtils is a utility class that provides useful methods for working with Sets.
11. SortedBag: A SortedBag is a Bag that maintains the order of the elements. It is similar to a TreeSet, but it allows for multiple occurrences of the same element.
12. SortedMap: A SortedMap is a Map that maintains the order of the elements. It is similar to a TreeMap, but it allows for multiple entries with the same key.
13. TransformedCollection: A TransformedCollection is a Collection that applies a transformation to all of its elements. It is similar to a List, but it applies a transformation to all of its elements.
14. TypedCollection: A TypedCollection is a Collection that enforces a type on its elements. It is similar to a List, but it ensures that all of its elements are of the same type.
Conclusion
The Apache Commons Collections library provides a rich set of data structures, algorithms and utilities designed to extend the Java Collections Framework. It contains a number of classes and interfaces that extend the Java Collections Framework, providing additional functionality and allowing developers to work with collections in more powerful ways. By using the Apache Commons Collections library, developers can take advantage of the additional features and flexibility of the library to create powerful and efficient applications.
The Apache Commons Collections software does not have any specific technical requirements, as it is written in Java and is platform independent. However, it does require a Java Runtime Environment (JRE) version 1.5 or higher in order to be able to run. In addition, the Apache Commons Collections software should be used in conjunction with other Apache Commons software, such as Commons Lang, Commons Logging, and Commons IO.
PROS
Provides rich set of collection and map utilities.
Highly efficient and reliable.
Supports Java 1.3+ and is open-source.
Highly efficient and reliable.
Supports Java 1.3+ and is open-source.
CONS
Requires knowledge of Java and object-oriented programming.
Lacks extensive documentation for newcomers.
Performance issues with complex data structures.
Lacks extensive documentation for newcomers.
Performance issues with complex data structures.
Noah D.
I've been using Apache Commons Collections for a while now and I must say it is a great library. It offers a wide range of useful utilities, such as a collection of classes that provide extra functionality for collections like Bag, Buffer, Predicated and Unmodifiable collections. It also provides utilities for bean manipulation and cloning, as well as helping to simplify the process of working with collections of Java objects. In addition, the library has been designed to be efficient and robust for multi-threaded applications. I have found it to be an invaluable tool in my development projects.
Thomas H.
Apache Commons Collections is an extremely versatile and powerful software library. It provides a great range of utilities for manipulating and operating on collections of objects. It is quick and easy to integrate with existing projects, and the API is well-documented and intuitive. I found that it is highly robust and reliable, and I had no issue using it in a production environment.
Connor Pinet
Apache Commons Collections is a Java library that provides a set of reusable collection types and algorithms to simplify programming tasks. It offers features such as bidirectional maps, ordered maps, and sets, multimap implementations, and tools for transforming collections. The library also includes advanced data structures such as tree maps, bag implementations, and circular buffer implementations. In addition, it provides a range of utilities for manipulating arrays, iterators, and enumerations. Overall, Apache Commons Collections is a useful tool for Java developers looking to streamline their code and improve efficiency.
Muhammad Gladys
Apache Commons Collections is a comprehensive library that provides a wide range of data structures that can be used in various Java programming needs.
Theo
Efficient, customizable data structure operation tools.
Jack
Versatile, efficient, reliable Java library.
Alfie
Apache Commons Collections est une extension très utile pour le langage de programmation Java. Cette bibliothèque fournit une collection de classes et d'interfaces pour manipuler des objets de données dans une manière simple et efficace. Avec Apache Commons Collections, les développeurs peuvent facilement gérer des listes, des ensembles, des cartes et d'autres structures de données couramment utilisées. Cette extension offre également des fonctionnalités avancées telles que le tri, la recherche, la transformation et la manipulation des données. Que vous soyez un débutant ou un développeur expérimenté, Apache Commons Collections peut vous aider à améliorer la productivité de votre développement Java en vous offrant des outils puissants et faciles à utiliser. Utilisez Apache Commons Collections pour simplifier vos tâches de manipulation de données et optimiser vos performances de programmation.
Brodie
"Reliable, versatile, significantly simplifies coding."
Logan
Helps with managing and manipulating data structures.
