CODEWITHSUNDEEP
javalistcollections
vivek
vivek

Reputation: 4919

How to replace a element in list of objects from another list

I have a List of Images

List<Image> images = getImages();

Image.java

public class Image {
    private String imageId;

    // getter and setter methods
    // ...
}

And I have a List<String> imageIds to replace the imageId in each Image object. What would be the best way to do it?

Upvotes: 2

Views: 167

Answers (4)

Mikhail
Mikhail

Reputation: 4223

You question sounds strange. It's not very clear, but if you need to add/remove/replace elements in the list, you should use ListIterator. It has a set method, which allows to replace elements.

Upvotes: 0

Ruchira Gayan Ranaweera
Ruchira Gayan Ranaweera

Reputation: 35547

You have mention in the comment both List has same order, So you can try this.

    List<String> imageIds=new ArrayList<>();
    List<Image> images = new ArrayList<>();
    for(Image img:images){
       img.setImageId(imageIds.iterator().next());
    }

Upvotes: 0

Aniket Thakur
Aniket Thakur

Reputation: 68905

Iterate over the Images list and call setImageId(imageId) on it.

Iterator<String> imageIDs = imageIds.iterator();
for(Image image : images){
    image.setImageId(imageIDs.next());
}

Since both are List I am assuming order is important as it is inserted.

Upvotes: 0

Zixia
Zixia

Reputation: 21

I think traversing the List<Image> and for each element call the imageID's setter will just works fine.

Even if there is a way to do it with less code, it probably uses traversing fundementally.

Upvotes: 1

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