How to create ArrayList of an object present within Arraylist?

Question

I have following use case

 class Agree{

 }

 class Agreebody{
    Agree agree;
 }

 class AgreeFull{
   List<AgreeBody> agreebody;
 }

The requirement is to create a List of all Agrees present inside AgreeBody List.

 List<Agree> l = new List<Agree>
 agreeFull.getAgreeBody.stream(). ? //Need to get Agree from Each agreebody and make list of agrees

Shall i call .forEach and do it manually or other better way?

Youcef LAIDANI · Accepted Answer · 2019-11-26 13:16:17Z

3

You can use map

List<Agree> l = agreeFull.getAgreebody().stream()
        .map(AgreeBody::getAgree)
        .collect(Collectors.toList());

You need also to focus on some part of your code, for example using getter and setters, significant name for the attributes and class..

answered Nov 26, 2019 at 13:10

Youcef LAIDANI

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