Bulk2Client client = new Bulk2ClientBuilder()
        .withPassword("<consumer key>", "<consumer secret>", "<username>", "<password>"
        .build();

Bulk2Client client = new Bulk2ClientBuilder()
        .withPassword("<consumer key>", "<consumer secret>", "<username>", "<password>"
        .useSandbox()
        .build();

CreateJobResponse createJobResponse = client.createJob("Account", OperationEnum.INSERT);
String jobId = createJobResponse.getId();

String csv = "Name,Description,NumberOfEmployees\n" +
        "TestAccount1,Description of TestAccount1,30\n" +
        "TestAccount2,Another description,40\n" +
        "TestAccount3,Yet another description,50";
client.uploadJobData(jobId, csv);

// When using a separate request to upload data, make sure to close the job
JobInfo closeJobResponse = client.closeJob(jobId);

while (true) {
    TimeUnit.SECONDS.sleep(1);

    GetJobInfoResponse jobInfo = client.getJobInfo(jobId);
    if (jobInfo.isFinished()) {
        break;
    }
}

String csv = "Name,Description,NumberOfEmployees\n" +
        "TestAccount1,Description of TestAccount1,30\n" +
        "TestAccount2,Another description,40\n" +
        "TestAccount3,Yet another description,50";

CreateJobResponse createJobResponse = client.createJob("Account", OperationEnum.INSERT,
        request -> request.withContent(csv));
String jobId = createJobResponse.getId();

while (true) {
    TimeUnit.SECONDS.sleep(1);

    GetJobInfoResponse jobInfo = client.getJobInfo(jobId);
    if (jobInfo.isFinished()) {
        break;
    }
}

GetAllJobsResponse jobs = client.getAllJobs(request -> request.withJobType(JobTypeEnum.BULK_API_2_0));
for (JobInfo jobInfo : jobs.getRecords()) {
    System.out.println(jobInfo);
}

try (BufferedReader reader = new BufferedReader(client.getJobSuccessfulRecordResults(jobId))) {
    reader.lines().forEach(System.out::println);
}