Can someone help how to create graph client using token created by IAuthenticationResult (msal4j)

Hello @Vrushabh Shet and thanks for reaching out. MS Graph clients creation require an instance of IAuthenticationProvider. Several built-in providers and samples are available in Choose a Microsoft Graph authentication provider based on scenario. If you already posses an token you can create your own class/implementation and return the token returned by IAuthenticationResult.getAccessToken() from within the getAuthorizationTokenAsync method.

E.g.

   // MyAuthenticationProvider.java  
   package com.example;  
   import java.net.URL;  
   import java.util.concurrent.CompletableFuture;  
   import com.microsoft.graph.authentication.IAuthenticationProvider;  
     
   public class MyAuthenticationProvider implements IAuthenticationProvider {  
     
       private CompletableFuture<String> accessTokenFuture;  
     
       public MyAuthenticationProvider(String accessToken) {  
           this.accessTokenFuture = new CompletableFuture<>();  
           this.accessTokenFuture.complete(accessToken);  
       }  
     
       @Override  
       public CompletableFuture<String> getAuthorizationTokenAsync(URL requestUrl) {  
           return this.accessTokenFuture;  
       }  
     
   }  
     
   // App.java  
   package com.example;  
   import com.google.gson.Gson;  
   import com.microsoft.graph.authentication.IAuthenticationProvider;  
   import com.microsoft.graph.models.User;  
   import com.microsoft.graph.requests.GraphServiceClient;  
     
   public class App {  
     
       public static void main(String[] args) {  
     
           String msalAccessToken = args[0];  
     
           final IAuthenticationProvider auth = new MyAuthenticationProvider(msalAccessToken);  
     
           final GraphServiceClient graphClient = GraphServiceClient  
                   .builder()  
                   .authenticationProvider(auth)  
                   .buildClient();  
     
           final User me = graphClient.me().buildRequest().get();  
     
           System.out.println(new Gson().toJson(me));  
     
       }  
   }  

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