Java 8 String To Map

If we needed to filter on string, e.g. Convert stream to map for unique product keys in java. This is also part of intermediate operations such as map () and filter () methods.

Collectors.tomap () method is used to convert the stream of object into the map as needed with the help 3 overloaded methods. We will go over the practical uses of java streams and how to convert stream elements into map elements. Starting with java 8, we can convert a list into a map using streams and collectors:

Now it becomes much easier to perform other operations as you desire.

First, we split the string by a comma and store it in an array parts. Public map<integer, animal> convertlistafterjava8(list list) { map<integer, animal> map = list.stream ().collect (collectors.tomap (animal::getid, function.identity ())); Java 8 provides collectors.tomap () that is useful to convert list to map. Few java 8 examples to show you how to convert a list of objects into a map, and how to handle the duplicated keys.