Java 8 将Map转换为List 你会吗？

Map<String, String> map = new HashMap<>();
// Convert all Map keys to a List
List<String> result = new ArrayList(map.keySet());
// Convert all Map values to a List
List<String> result2 = new ArrayList(map.values());
// Java 8, Convert all Map keys to a List
List<String> result3 = map.keySet().stream()
	.collect(Collectors.toList());
// Java 8, Convert all Map values  to a List
List<String> result4 = map.values().stream()
	.collect(Collectors.toList());
// Java 8, seem a bit long, but you can enjoy the Stream features like filter and etc.
List<String> result5 = map.values().stream()
	.filter(x -> !"apple".equalsIgnoreCase(x))
	.collect(Collectors.toList());
// Java 8, split a map into 2 List, it works!
// refer example 3 below

转自

Java 8 将Map转换为List 你会吗？

原文：https://www.cnblogs.com/sonofsea/p/14790105.html