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www.chrisritchie.org | ||
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nikgrozev.com
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| | | | | Oracle has recently released a 3-week JDK 8 Massive Open and Online Course called "Lambdas and Streams", which discusses the new JDK8 functional features in ... | |
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winterbe.com
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| | | | | Learn Java 8 streams by example: functional programming with filter, map, flatMap, reduce, collect, lambdas, sequential and parallel streams are covered in-depth in this tutorial. | |
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konradreiche.com
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| | | | | Since most of the Java code I wrote in the past was on Android I was not able to enjoy too many Java 8 features yet. Though recently I wrote a microservice in Java using Spring Boot where I could make full use of lambdas and functional interfaces. The following method, for instance, returns the sum of all transactions for a specified instance by traversing their children. @RequestMapping(value = "/transaction/sum/{id}", method = RequestMethod.GET) BigDecimal Sum sum(@PathVariable long id) { List transactions = new ArrayList<>(); Transaction current = repository.find(id); while (current != null) { transactions.add(current); current = current.getChild(); } return transactions.stream().map(t -> t.getAmount()) .reduce(BigDecimal.ZERO, BigDecimal::add); } As some... | |
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www.github.com
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| | | my blog, with astro. Contribute to Krayorn/blog development by creating an account on GitHub. | ||
