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How to calculate the area of polygon. For a triangle like: We can calculate the area: This approach is able to solve all simple polygon areas problem: 阅读全文
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Many times we might changed one file which we don't intent to do... but it was too late, until we found it, it is already push to repo. Let's assume, 阅读全文
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Aspect-Oriented Programming (AOP) complements Object-Oriented Programming (OOP) by providing another way of thinking about program structure. The key 阅读全文
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Previously we use Application Context to get Bean and Dependenies injection. It is actually easier to use 'CommonLineRunner'. Main beneift is we can u 阅读全文