Detailed explanation of the technical principles

Javagimmicks Collections framework is an open source item for enhancing the collection framework in the Java library.It is based on Java 8 and above, and follows a series of technical principles to provide more powerful and flexible collection operations. 1. Functional enhancement: Javagimmicks Collection's framework aims to provide additional functions and convenience methods for the Java collection framework.For example, it provides a more intuitive way to screen, map, and agglomerate.This makes the writing collection operation easier and flexible. List<String> strings = Arrays.asList("apple", "banana", "cherry"); List<String> filteredList = Collections.filter(strings, s -> s.length() > 5); System.out.println(filteredList); // Output: [banana, cherry] 2. Confidentiality: Javagimmicks Collection's framework is implemented with unmodified sets, that is, they do not allow the elements in the collection, delete or modify the elements in the set.This irreversible ensures the security of the set of the set and reduces the complication problem caused by modifying the collection by multiple threads at the same time. List<String> immutableList = Collections.immutableList("apple", "banana", "cherry"); immutableList.add("date"); // UnsupportedOperationException 3. Specific type collection: Javagimmicks Collections framework also provides some specific types of sets, such as Multimap (multi -value mapping) and Multiset (multi -value set).These sets allow multiple values to be mapped to a single key or store multiple same elements.They provide more choices and flexibility for application developers. MultiMap<String, String> multiMap = new HashMultiMap<>(); multiMap.put("fruits", "apple"); multiMap.put("fruits", "banana"); multiMap.put("fruits", "cherry"); System.out.println(multiMap.get("fruits")); // Output: [apple, banana, cherry] 4. Air safety: Javagimmicks Collections Framework Avoid NullPointerexception abnormalities by providing air safety sets.The air safety set will refuse or ignore any attempts to add or query the air value to ensure the robustness of the program. List<String> nonNullList = Collections.nonNullList("apple", "banana", null, "cherry"); System.out.println(nonNullList); // Output: [apple, banana, cherry] 5. Chain operation: Javagimmicks Collection of the chain operation, allows developers to perform multiple collection operations in one expression.This can express a series of conversion and operations of the collection more concisely and readable. List<String> fruits = Arrays.asList("apple", "banana", "cherry"); List<String> result = Collections.from(fruits) .filter(s -> s.length() > 5) .map(String::toUpperCase) .toList(); System.out.println(result); // Output: [BANANA, CHERRY] All in all, Javagimmicks Collections framework brings more powerful and flexible operational capabilities to the collection framework of the Java class library by providing technical principles such as enhancement, unchanging, specific type sets, air safety and chain operations.Developers can use these characteristics to improve development efficiency, simplify code, and reduce the probability of errors.