Jimmutable Collections: Unchanging Framework in the Java Library

Uncharacteristic set refers to a collection that cannot be modified once it is created.The Java class library provides Jimmutable Collections (JIC) framework to create uncharacteristic sets. These sets can ensure the integrity and thread security of the data.This article will introduce the advantages, use methods, and Java code example of the JIC framework. First of all, let's find out why the useless collection is beneficial.There is the following advantages of non -changing collection: 1. Thread security: Since the uncharacteristic set cannot be modified, multiple threads can be accessed and used in parallel to use them without extra synchronization mechanisms. 2. Data integrity: The uncharacteristic set prevents unexpected data modification and ensures the consistency and reliability of the data. 3. Performance optimization: Because the unsatisfactory collection cannot be modified after creation, some optimization can be performed, such as sharing data internally to improve performance and memory efficiency. Next, let's see how to use the JIC framework in Java to create uncharacteristic sets.First, we need to add the dependency item of the JIC library.You can add it to the Maven or Gradle configuration file: Maven: <dependency> <groupId>org.javimmutable</groupId> <artifactId>jimmutable-collections</artifactId> <version>4.0.0</version> </dependency> Gradle: groovy implementation 'org.javimmutable:jimmutable-collections:4.0.0' Once the dependencies are added, we can start using the JIC framework to create uncharacteristic collection.The following are examples of some common JIC collection types and their creation methods: 1. JLIST (unsatisfactory list): JList<String> list = JList.of("apple", "banana", "orange"); 2. JMAP (unsatisfactory mapping): JMap<String, Integer> map = JMap.of("apple", 1, "banana", 2, "orange", 3); 3. JSET (non -changing collection): JSet<Integer> set = JSet.of(1, 2, 3, 4, 5); After creating these uncharacteristic sets, it cannot be added, deleted or modified.If you want to perform these operations, you can create a new unchanged collection. The benefits of using the JIC framework are not limited to the creation of inseparable collection.It also provides many convenient operation methods, such as mapping conversion, filtration and aggregation.Here are some examples: 1. Map conversion: JList<Integer> transformedList = list.map(String::length); 2. Filter: JList<String> filteredList = list.filter(str -> str.startsWith("a")); 3. Jugging: int sum = set.fold(0, (acc, element) -> acc + element); By using these methods, various operations can be performed on the inseparable collection without worrying about any impact on its original data. To sum up, the Jimmutable Collection (JIC) framework provides the ability to create uncharacteristic collection in Java.There are many benefits such as thread security, data integrity, and performance advantages.By using the JIC framework, we can create and operate these sets, and ensure the integrity and security of the data.This will make our code more robust and reliable. I hope this article can help you understand the JIC framework and the basic method of creating unchanged collection.Let us make full use of this powerful library when developing Java applications to improve code quality and performance.