Java中的函数式编程

问题描述

是否有一个用于Java函数式编程的良好库？

我正在寻找诸如和（作为一个静态方法）。

解决方案

是最知名的图书馆;它使用Java关闭（）举例：

  final Array< Integer> a =数组（1,2,3）; 
 final Array< Integer> b = a.map（{int i => i + 42}）; 
 arrayShow（intShow）.println（b）; // {43,44,45} 
  

编辑

请检查。

进一步编辑

BGGA完全是可选的。它只是为了更好的语法。

Is there a good library for functional programming in Java?

I'm looking for stuff like Predicate and List.Find() (as a static method). Not complicated to implement, but it would be nice to find a reusable library here.

解决方案

FunctionalJava is the best known library; it makes use of Java closures (BGGA) for examples:

final Array<Integer> a = array(1, 2, 3);
final Array<Integer> b = a.map({int i => i + 42});
arrayShow(intShow).println(b); // {43,44,45}

EDIT

Check also lambdaj.

Further EDIT

BGGA is entirely optional. It just makes for nicer syntax.

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