Functional programming in Java: tutorial on how to use Java 8 Streams filter, map, sort, reduce and collect functions. ... <看更多>

Java 8 streams Map of maps transformation. ... getTrees(false).values().stream() // Map<IndustryTemplate, Map<FinancialGroup, FinancialTree>>. ... <看更多>

First you can use filter to check any Language object has value of en and then use findFirst to get the matching Language object ... <看更多>