Matching and setting object variable from a list to a different object list

Stefza :

Trying to figure out the best way to match an Objects variable that is in a list with a different type of Object Variable in a list. Once the match has been found I would like to set a different variable within that first Object to another Object variable it matched with. The best way to explain this would be like this:

I have a List<Cat> cats and cat has the variables id, size, breed, name, vetId and vetName.

I also have a List<Vet> vets and vets have variables id, address, phone and name.

The list of cats has a vetId but vetName is null, I need to somehow add the name from the vets list.

I need a quick and efficient way to do this. I'm not so skilled with new Java 8 stuff but i'm sure there will be a quick way of doing this with it.

ETO :

Assuming you have two lists List<Cat> cats and List<Vet> vets

You can achieve what you need using Stream API:

// Build map of (vetId -> vetName) pairs
Map<Long, String> vetMap = vets.stream().collect(toMap(Vet::getId, Vet::getName));
// Update cats with proper vet names
cats.forEach(cat -> cat.setVetName(vetMap.get(cat.getVetId())));

Guess you like

Origin http://43.154.161.224:23101/article/api/json?id=306595&siteId=1

Matching and setting object variable from a list to a different object list

How to retrieve list of different object types from Firebase?

Java - Turn Object with List Variable into a List of Objects

Java 8 from a list object to the attributes of a list object

Remove duplicate list object value from another object list

The problem of Python's List variable object

Object object to List collection

List map to list object

Retrieve Object From Nested List Spring JpaRepository

How to get List from Object in Spring RestTemplate

How to remove a field from each object of a list of object?

Group list of object by an attribute and set other remaining attribute to different object list : Java 8 stream and Lambdas

Convert List object to Page object

js array object list to object

List<object> 转 List<T>

List<Object>转List<T>

List＜Object＞转List＜User＞：

Sort List in place by a variable deep down in the structure in a complex Object

Sort List in place by a variable deep down in the structure in a complex Object

Update param in list1<object> from list2<object> by using java 8

The difference between List List<Object> List<?>

Access elements of List <List <List <List <Object> >>> titles = new ArrayList <List <List <List <Object> >>> ();

List collections calling object

Object initialization list in c ++

List object deduplication

Convert list to string object

Count occurences of an object in a List

containsAll for nCopies of object in List

Object to List tool class

Jackson to List object