# Send emails with Java

## Prerequisites

Before you start, you'll need:

- A Resend [API key](/guides/get-started-create-an-api-key)
- A [verified domain](/guides/get-started-add-a-domain)

## Guide

:::::steps
::::step{title="Install"}
:::code-group
```bash Gradle theme={"theme":{"light":"github-light","dark":"vesper"}}
implementation 'com.resend:resend-java:+'
```

```xml Maven theme={"theme":{"light":"github-light","dark":"vesper"}}
<dependency>
    <groupId>com.resend</groupId>
    <artifactId>resend-java</artifactId>
    <version>LATEST</version>
</dependency>
```
:::
::::

:::step{title="Send emails using HTML"}
```java Main.java theme={"theme":{"light":"github-light","dark":"vesper"}}
import com.resend.*;

public class Main {
    public static void main(String[] args) {
        Resend resend = new Resend("re_xxxxxxxxx");

        CreateEmailOptions params = CreateEmailOptions.builder()
                .from("Acme <onboarding@resend.dev>")
                .to("delivered@resend.dev")
                .subject("it works!")
                .html("<strong>hello world</strong>")
                .build();

         try {
            CreateEmailResponse data = resend.emails().send(params);
            System.out.println(data.getId());
        } catch (ResendException e) {
            e.printStackTrace();
        }
    }
}
```
:::
:::::

## Examples

::::card-grid
:::card{title="Basic Send" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/BasicSend.java" icon="arrow-up-right-from-square"}
Basic email sending
:::

:::card{title="Attachments" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/WithAttachments.java" icon="arrow-up-right-from-square"}
Send emails with file attachments
:::

:::card{title="Templates" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/WithTemplate.java" icon="arrow-up-right-from-square"}
Send emails using Resend hosted templates
:::

:::card{title="Scheduling" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/ScheduledSend.java" icon="arrow-up-right-from-square"}
Schedule emails for future delivery
:::

:::card{title="Audiences" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/Audiences.java" icon="arrow-up-right-from-square"}
Manage contacts and audiences
:::

:::card{title="Domains" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/Domains.java" icon="arrow-up-right-from-square"}
Create and manage sending domains
:::

:::card{title="Inbound Webhooks" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/Inbound.java" icon="arrow-up-right-from-square"}
Receive and process inbound emails
:::

:::card{title="Double Opt-in" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/DoubleOptinSubscribe.java" icon="arrow-up-right-from-square"}
Double opt-in subscription flow
:::

:::card{title="Javalin App" href="https://github.com/resend/resend-examples/tree/main/java-resend-examples/javalin_app" icon="arrow-up-right-from-square"}
Full Javalin web framework application
:::

:::card{title="Spring Boot App" href="https://github.com/resend/resend-examples/tree/main/java-resend-examples/spring_boot_app" icon="arrow-up-right-from-square"}
Full Spring Boot application
:::
::::

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