How to list IAM users using AWS SDK ?

Step 1 – add dependencies

After you create your project, add these dependencies to the pom.xml file.

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>bom</artifactId>
                <version>2.25.12</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>software.amazon.awssdk</groupId>
            <artifactId>iam</artifactId>
        </dependency>
    </dependencies>

Step 2 – Using the SDK in your Java class

Create IAM Client

First you need to create an IAM client.

IamClient iam = IamClient.builder().build();

List User request and response

try {
    IamClient iam = IamClient.builder().build();
    ListUsersRequest request = ListUsersRequest.builder().build();
    ListUsersResponse response = iam.listUsers(request);
    List<User> users = response.users();

    for (User user: users) {
        System.out.println("User name : " + user.userName());
    }
    iam.close();

} catch (IamException ex) {
    System.err.println(ex.awsErrorDetails().errorMessage());
}

Run the program.

Output :

User name : javauser
User name : testuser

Full Program

package org.example;

import software.amazon.awssdk.services.iam.IamClient;
import software.amazon.awssdk.services.iam.model.IamException;
import software.amazon.awssdk.services.iam.model.ListUsersRequest;
import software.amazon.awssdk.services.iam.model.ListUsersResponse;
import software.amazon.awssdk.services.iam.model.User;

import java.util.List;

public class ListIAMUsers {
    public static void main(String[] args) {
        System.out.println("List IAM Using using AWS SDK through Java");

        try {
            IamClient iam = IamClient.builder().build();
            ListUsersRequest request = ListUsersRequest.builder().build();
            ListUsersResponse response = iam.listUsers(request);
            List<User> users = response.users();

            for (User user: users) {
                System.out.println("User name : " + user.userName());
            }
            iam.close();

        } catch (IamException ex) {
            System.err.println(ex.awsErrorDetails().errorMessage());
        }
    }
}