import java.util.List; import java.util.Map; import java.util.stream.Collectors; public class TestListMap { public static void main(String[] args) { List<Hosting> list = new ArrayList<>(); list.add(new Hosting(1, "liquidweb.com", 80000)); list.add(new Hosting(2, "linode.com", 90...
For Java 8, you can convert the Map into a stream, process it and returns it back as a List ConvertMapToList.java package com.mkyong; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.stream.Collectors; public class ConvertMapToList { public static...
{ map<integer, animal> map = convertlistservice .convertlistbeforejava8(list); assertthat( map.values(), containsinanyorder(list.toarray())); } 4. with java 8 starting with java 8, we can convert a list into a map using streams and collectors : public map<integer, animal> convert...
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>...
map() method in java 8 stream is used to convert an object of one type to an object of another type or to transform elements of a collection. map() returns a stream which can be converted to an individual object or a collection, such as a list....
Employeeemployee=newEmployee(1,"Alex",LocalDate.of(1995,1,2),List.of("Delhi","Nevada"),List.of(newRole(11,"Finance"),newRole(12,"HR")));System.out.println(convertObjectToMapUsingGson(employee));staticMap<String,String>convertObjectToMapUsingGson(Employeeemployee){Gsongson=newGsonBuilder().re...
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