Create a Java program that generates PDF reports from data stored in an Azure SQL Database. Use Apache PDFBox library to create the PDF documents and format them according to a predefined template. The generated reports should be saved to an Azure Blob Storage container.
To create a Java program that generates PDF reports from data stored in an Azure SQL Database and saves them to an Azure Blob Storage container, follow these steps:

1. Set up your development environment by installing the required libraries and tools.

- Install JDK 8 or later: https://www.oracle.com/java/technologies/javase-downloads.html
- Install Apache Maven: https://maven.apache.org/download.cgi
- Install an IDE like IntelliJ IDEA or Eclipse

2. Create a new Maven project in your favorite IDE.

3. Add the following dependencies to your `pom.xml` file:

```xml
<dependencies>
    <dependency>
        <groupId>com.microsoft.sqlserver</groupId>
        <artifactId>mssql-jdbc</artifactId>
        <version>9.4.0.jre11</version>
    </dependency>
    <dependency>
        <groupId>org.apache.pdfbox</groupId>
        <artifactId>pdfbox</artifactId>
        <version>2.0.24</version>
    </dependency>
    <dependency>
        <groupId>com.azure</groupId>
        <artifactId>azure-storage-blob</artifactId>
        <version>12.13.0</version>
    </dependency>
</dependencies>
```

4. Replace the contents of the `src/main/java/com/example/App.java` file with the following code:

```java
package com.example;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.font.PDType1Font;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class App {
    public static void main(String[] args) throws Exception {
        // Replace with your Azure SQL Database connection string
        String connectionString = "jdbc:sqlserver://your_server.database.windows.net:1433;database=your_database;user=your_user@your_server;password=your_password;encrypt=true;trustServerCertificate=false;hostNameInCertificate=*.database.windows.net;loginTimeout=30;";
        
        try (Connection connection = DriverManager.getConnection(connectionString)) {
            Statement statement = connection.createStatement();
            ResultSet resultSet = statement.executeQuery("SELECT * FROM your_table");

            PDDocument document = new PDDocument();
            PDPage page = new PDPage(PDRectangle.A4);
            document.addPage(page);

            try (PDPageContentStream contentStream = new PDPageContentStream(document, page)) {
                contentStream.setFont(PDType1Font.HELVETICA_BOLD, 12);
                int yPos = 700;
                while (resultSet.next()) {
                    String data = resultSet.getString("column_name");
                    contentStream.beginText();
                    contentStream.newLineAtOffset(50, yPos);
                    contentStream.showText(data);
                    contentStream.endText();
                    yPos -= 20;
                }
            }

            ByteArrayOutputStream pdfOutputStream = new ByteArrayOutputStream();
            document.save(pdfOutputStream);
            document.close();

            ByteArrayInputStream pdfInputStream = new ByteArrayInputStream(pdfOutputStream.toByteArray());
            saveToAzureBlobStorage(pdfInputStream, "your_container", "report.pdf");
        }
    }

    private static void saveToAzureBlobStorage(ByteArrayInputStream inputStream, String containerName, String blobName) {
        // Replace with your Azure Blob Storage connection string
        String connectionString = "DefaultEndpointsProtocol=https;AccountName=your_account_name;AccountKey=your_account_key;EndpointSuffix=core.windows.net";

        BlobServiceClient blobServiceClient = new BlobServiceClientBuilder().connectionString(connectionString).buildClient();
        BlobContainerClient containerClient = blobServiceClient.getBlobContainerClient(containerName);
        if (!containerClient.exists()) {
            containerClient.create();
        }

        BlobClient blobClient = containerClient.getBlobClient(blobName);
        blobClient.upload(inputStream, inputStream.available(), true);
    }
}
```

5. Replace the placeholders in the code with your actual Azure SQL Database and Azure Blob Storage connection strings, table name, and column name.

6. Run the program by executing `mvn compile exec:java` in the terminal or running the `App.java` file in your IDE.

This Java program will generate a PDF report from data stored in an Azure SQL Database using Apache PDFBox library, format it according to a predefined template, and save the generated report to an Azure Blob Storage container.