ExecutorService service = Executors.newFixedThreadPool(1);
AuthenticationContext context = new AuthenticationContext(AUTHORITY, false, service);
Future<AuthenticationResult> future = context.acquireToken(
    "https://graph.windows.net", YOUR_TENANT_ID, username, password,
    null);
AuthenticationResult result = future.get();
System.out.println("Access Token - " + result.getAccessToken());
System.out.println("Refresh Token - " + result.getRefreshToken());
System.out.println("ID Token - " + result.getIdToken());

/**
     * Acquires a security token from the authority using a Refresh Token
     * previously received.
     *
     * @param clientId
     *            Name or ID of the client requesting the token.
     * @param resource
     *            Identifier of the target resource that is the recipient of the
     *            requested token. If null, token is requested for the same
     *            resource refresh token was originally issued for. If passed,
     *            resource should match the original resource used to acquire
     *            refresh token unless token service supports refresh token for
     *            multiple resources.
     * @param username
     *            Username of the managed or federated user.
     * @param password
     *            Password of the managed or federated user.
     * @param callback
     *            optional callback object for non-blocking execution.
     * @return A {@link Future} object representing the
     *         {@link AuthenticationResult} of the call. It contains Access
     *         Token, Refresh Token and the Access Token's expiration time.
     */
    public Future<AuthenticationResult> acquireToken(final String resource,
            final String clientId, final String username,
            final String password, final AuthenticationCallback callback) {
        if (StringHelper.isBlank(resource)) {
            throw new IllegalArgumentException("resource is null or empty");
        }
        if (StringHelper.isBlank(clientId)) {
            throw new IllegalArgumentException("clientId is null or empty");
        }
        if (StringHelper.isBlank(username)) {
            throw new IllegalArgumentException("username is null or empty");
        }
        if (StringHelper.isBlank(password)) {
            throw new IllegalArgumentException("password is null or empty");
        }
        return this.acquireToken(new AdalAuthorizatonGrant(
                new ResourceOwnerPasswordCredentialsGrant(username, new Secret(
                        password)), resource), new ClientAuthenticationPost(
                ClientAuthenticationMethod.NONE, new ClientID(clientId)),
                callback);
    }

package com.example;
import java.net.MalformedURLException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import com.microsoft.aad.adal4j.AuthenticationContext;
import com.microsoft.aad.adal4j.AuthenticationResult;
/**
 * Hello world!
 *
*/
public class App {
    public static void main(String[] args) throws InterruptedException, ExecutionException, MalformedURLException {
        System.out.println("Hello World!");
        ExecutorService service = Executors.newFixedThreadPool(1);
        String AUTHORITY = "https://login.chinacloudapi.cn/<tenant id >"; // AzureAuthority 
   
        String YOUR_Client_ID="7b61c392-xxxx-xxxx-xxxx-xxxxxxxxxxx";
        String username = "xxxx@xxxx.xxx.onmschina.cn";
        String password = "xxxxxxxxxxx";
        AuthenticationContext context = new AuthenticationContext(AUTHORITY, false, service);
        Future<AuthenticationResult> future = context.acquireToken("https://microsoftgraph.chinacloudapi.cn/", YOUR_Client_ID,
                username, password, null);
        AuthenticationResult result = future.get();
        System.out.println("Access Token - " + result.getAccessToken());
        System.out.println("Refresh Token - " + result.getRefreshToken());
        System.out.println("ID Token - " + result.getIdToken());
    }
}