Coding

What Are the Key Differences Between HashMap, LinkedHashMap, and TreeMap in Java?

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Discover the fundamental differences between HashMap, LinkedHashMap, and TreeMap in Java, including their performance characteristics, order of elements, and use cases. This comprehensive guide offers code examples to illustrate each type of map.

What is the Purpose of the FunctionalInterface Annotation in Java?

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The FunctionalInterface annotation in Java plays a crucial role in the language’s support for functional programming. It helps to define a single abstract method interface, ensuring clarity, safety, and ease of use, especially in lambda expressions and method references. This article delves into the purpose, benefits, and examples of FunctionalInterface, exploring its significance in modern Java development.