Blob Storage — Java SDK Quick Reference

Condensed from azure-storage-blob-java. Full patterns (SAS tokens, streaming, lease management, parallel uploads, proxy config) in the azure-storage-blob-java plugin skill if installed.

Install

<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-storage-blob</artifactId>
    <version>12.33.0</version>
</dependency>
<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-identity</artifactId>
</dependency>

Quick Start

import com.azure.storage.blob.BlobServiceClientBuilder;
import com.azure.identity.DefaultAzureCredentialBuilder;
var serviceClient = new BlobServiceClientBuilder()
    .endpoint("<storage-account-url>")
    .credential(new DefaultAzureCredentialBuilder().build())
    .buildClient();

Best Practices

• Use DefaultAzureCredential for local development only — in production, use ManagedIdentityCredential. See auth-best-practices.md
• Use BinaryData.fromString() for string uploads
• Use createIfNotExists() for idempotent container creation
• Use BlobParallelUploadOptions for large file uploads with headers/metadata
• Use BlobInputStream/BlobOutputStream for streaming large blobs
• Handle BlobStorageException — check getStatusCode() and getErrorCode()