<!-- Maven -->
<dependency>
    <groupId>com.telnyx.sdk</groupId>
    <artifactId>telnyx</artifactId>
    <version>6.36.0</version>
</dependency>

// Gradle
implementation("com.telnyx.sdk:telnyx:6.36.0")

import com.telnyx.sdk.client.TelnyxClient;
import com.telnyx.sdk.client.okhttp.TelnyxOkHttpClient;

TelnyxClient client = TelnyxOkHttpClient.fromEnv();

import com.telnyx.sdk.errors.TelnyxServiceException;

try {
    var result = client.messages().send(params);
} catch (TelnyxServiceException e) {
    System.err.println("API error " + e.statusCode() + ": " + e.getMessage());
    if (e.statusCode() == 422) {
        System.err.println("Validation error — check required fields and formats");
    } else if (e.statusCode() == 429) {
        // Rate limited — wait and retry with exponential backoff
        Thread.sleep(1000);
    }
}

import com.telnyx.sdk.models.storage.buckets.sslcertificate.SslCertificateRetrieveParams;
import com.telnyx.sdk.models.storage.buckets.sslcertificate.SslCertificateRetrieveResponse;

SslCertificateRetrieveResponse sslCertificate = client.storage().buckets().sslCertificate().retrieve("");

import com.telnyx.sdk.models.storage.buckets.sslcertificate.SslCertificateCreateParams;
import com.telnyx.sdk.models.storage.buckets.sslcertificate.SslCertificateCreateResponse;

SslCertificateCreateResponse sslCertificate = client.storage().buckets().sslCertificate().create("");

import com.telnyx.sdk.models.storage.buckets.sslcertificate.SslCertificateDeleteParams;
import com.telnyx.sdk.models.storage.buckets.sslcertificate.SslCertificateDeleteResponse;

SslCertificateDeleteResponse sslCertificate = client.storage().buckets().sslCertificate().delete("");

import com.telnyx.sdk.models.storage.buckets.usage.UsageGetApiUsageParams;
import com.telnyx.sdk.models.storage.buckets.usage.UsageGetApiUsageResponse;
import java.time.OffsetDateTime;

UsageGetApiUsageParams params = UsageGetApiUsageParams.builder()
    .bucketName("")
    .filter(UsageGetApiUsageParams.Filter.builder()
        .endTime(OffsetDateTime.parse("2019-12-27T18:11:19.117Z"))
        .startTime(OffsetDateTime.parse("2019-12-27T18:11:19.117Z"))
        .build())
    .build();
UsageGetApiUsageResponse response = client.storage().buckets().usage().getApiUsage(params);

import com.telnyx.sdk.models.storage.buckets.usage.UsageGetBucketUsageParams;
import com.telnyx.sdk.models.storage.buckets.usage.UsageGetBucketUsageResponse;

UsageGetBucketUsageResponse response = client.storage().buckets().usage().getBucketUsage("");

import com.telnyx.sdk.models.storage.buckets.BucketCreatePresignedUrlParams;
import com.telnyx.sdk.models.storage.buckets.BucketCreatePresignedUrlResponse;

BucketCreatePresignedUrlParams params = BucketCreatePresignedUrlParams.builder()
    .bucketName("")
    .objectName("")
    .build();
BucketCreatePresignedUrlResponse response = client.storage().buckets().createPresignedUrl(params);