Design patterns like Singleton and Factory are essential for addressing common software design problems, leading to significant improvements in code maintainability, scalability, and understandability.
The Singleton pattern is especially beneficial for managing resources like database connections, ensuring only one instance exists, which simplifies resource management and prevents duplication.
Java Streams API, introduced in Java 8, enables functional-style processing of sequences, allowing for cleaner and more efficient data manipulation through operations such as filtering and mapping.
Using the reduce method in Java Streams allows for aggregation of elements into a single value, which enhances the ability to perform cumulative operations on collections.
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