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Open your command-line interface (CLI) in a directory where you want to create the project. Run the following command to create a new Maven project.

mvn archetype:generate -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeGroupId=org.apache.maven.archetypes -DgroupId=com.contoso -DartifactId=graphtutorial -Dversion=1.0-SNAPSHOT

Important

You can enter different values for the group ID (DgroupId parameter) and artifact ID (DartifactId parameter) than the values specified above. The sample code in this tutorial assumes that the group ID com.contoso was used. If you use a different value, be sure to replace com.contoso in any sample code with your group ID.

When prompted, confirm the configuration, then wait for the project to be created. Once the project is created, verify that it works by running the following commands to package and run the app in your CLI.

mvn package
java -cp target/graphtutorial-1.0-SNAPSHOT.jar com.contoso.App

If it works, the app should output Hello World!. Before moving on, add some additional dependencies that you will use later.

Open ./graphtutorial/pom.xml. Add the following inside the <dependencies> element.

<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-nop</artifactId>
  <version>1.8.0-beta4</version>
</dependency>

<dependency>
  <groupId>com.microsoft.graph</groupId>
  <artifactId>microsoft-graph</artifactId>
  <version>1.4.0</version>
</dependency>

<dependency>
  <groupId>com.microsoft.azure</groupId>
  <artifactId>msal4j</artifactId>
  <version>0.4.0-preview</version>
</dependency>

The next time you build the project, Maven will download those dependencies.

Design the app

Open the ./graphtutorial/src/main/java/com/contoso/App.java file and replace its contents with the following.

package com.contoso;

import java.util.InputMismatchException;
import java.util.Scanner;

/**
 * Graph Tutorial
 *
 */
public class App {
    public static void main(String[] args) {
        System.out.println("Java Graph Tutorial");
        System.out.println();

        Scanner input = new Scanner(System.in);

        int choice = -1;

        while (choice != 0) {
            System.out.println("Please choose one of the following options:");
            System.out.println("0. Exit");
            System.out.println("1. Display access token");
            System.out.println("2. List calendar events");

            try {
                choice = input.nextInt();
            } catch (InputMismatchException ex) {
                // Skip over non-integer input
                input.nextLine();
            }

            // Process user choice
            switch(choice) {
                case 0:
                    // Exit the program
                    System.out.println("Goodbye...");
                    break;
                case 1:
                    // Display access token
                case 2:
                    // List the calendar
                    break;
                default:
                    System.out.println("Invalid choice");
            }
        }

        input.close();
    }
}

This implements a basic menu and reads the user's choice from the command line.