https://developers.arcgis.com/javascript/latest/tutorials/display-a-web-map-portal/
Display a web map from a portal | ArcGIS Maps SDK for JavaScript
Learn how to display a map from a web map stored in ArcGIS.
a webportal arcgisdisplaymap
https://developers.arcgis.com/java/v200/sample-code/feature-collection-layer-from-portal/
Feature collection layer from portal | ArcGIS Maps SDK for Java | Esri Developer
feature collectionportal arcgis