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This article introduces Java 8 Stream API, demonstrates filtering, mapping, sorting, collecting, and parallel streams with POJO examples, including code snippets, performance tips, and links to related resources, while also containing promotional messages for ChatGPT services.
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This article introduces Java 8's Stream API, explains its intermediate and terminal operations, highlights its functional characteristics, compares its performance with traditional iterator loops through benchmark tests, and offers practical recommendations for using streams and parallel streams in backend development.
This article explains Java 8 Stream fundamentals, compares its intermediate and terminal operations with traditional iterator loops through a series of benchmark tests (mapping, filtering, sorting, reduction, string joining, and mixed operations), analyzes results for different data sizes and CPU configurations, and provides practical guidance on when to use Stream, parallel Stream, or iterator in backend development.
This article details how to dramatically speed up the import of massive Excel files in a Java backend by switching to EasyExcel, caching database lookups, using batch inserts, and applying parallel streams while eliminating excessive logging.
This article details a step-by-step optimization of a Java-based Excel import process, covering migration from POI to EasyExcel, caching database lookups, using batch inserts with VALUES, and leveraging parallel streams to dramatically reduce import time for massive datasets.
This article analyzes Java 8 Stream API versus traditional iterator approaches across mapping, filtering, sorting, reduction, string concatenation and mixed operations, presenting benchmark results on various data sizes and offering practical recommendations for when to use streams, parallel streams, or iterators.
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