Java
Detailed technical documentation on using RudderStack’s Java SDK to send events to various destinations.
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Detailed technical documentation on using RudderStack’s Java SDK to send events to various destinations.
Last updated
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RudderStack’s Java SDK allows you to track your customer event data from your Java applications and send it to your specified destinations via RudderStack.
Check out the GitHub codebase to get a more hands-on understanding of the SDK.
To set up the RudderStack Java SDK, the following prerequisites must be met:
You will need to set up a RudderStack account.
Once signed up, set up a Java source in the dashboard. For more information, follow this guide. You should then see a Write Key for this source, as shown below:
You will also need a data plane URL. Follow this section for more information on the data plane URL and where to get it.
As Bintray has sunset from 1st may, 2021, we're moving our SDK to Maven Central. All the versions from 1.0.1 will now be available in Maven Central only.
We distribute our Java SDK through Maven Central. The recommended and easiest way to add the SDK to your project is through the Maven build system.
To install the RudderStack Java SDK, add the following lines of code to pom.xml
:
If you're using Gradle, add the below to your dependencies:
To initialize the RudderStack client, run the following code snippet:
Once the RudderStack client is initialized, you can use it to send relevant customer events from the RudderStack client.
RudderStack does not store the user state in any of the server-side SDKs. Unlike the client-side SDKs that deal with only a single user at a given time, the server-side SDKs deal with multiple users at the same time. Therefore, for any of the calls supported by the Java SDK, you need to specify either userId
or anonymousId
every time.
A sample track
call is as shown:
The identify
call lets you identify a visiting user and capture any related information such as their name, email address, etc.
A sample identify
call is as shown:
The identify
method parameters are as described below:
Field
Type
Presence
Description
anonymousId
String
Optional
Sets the user ID for cases where there is no unique identifier for the user. Either userId
or anonymousId
is required.
userId
String
Optional, if anonymousId
is already set
Unique identifier for a particular user in your database.
context
Object
Optional
Dictionary of information that provides context about a message. However, it is not directly related to the API call.
integrations
Object
Optional
A dictionary containing the destinations to be either enabled or disabled.
timestamp
Date
Optional
The timestamp of the message's arrival.
traits
Object
Optional
Dictionary of the traits associated with the user, such as name
or email
The track
call lets you record the user actions along with their associated properties. Each user action is called an event.
A sample track
call is shown below:
The track
method parameters are as described below:
user_id
String
Required
The developer identification for your user
event
String
Required
Name of the event being performed by the user
properties
Object
Optional
Dictionary of the properties associated with a particular event.
context
Object
Optional
Dictionary of information that provides context about a message. However, it is not directly related to the API call.
timestamp
Date
Optional
The timestamp of the message's arrival.
anonymous_id
String
Optional
Sets the user ID for cases where there is no unique identifier for the user. Either userId
or anonymousId
is required.
integrations
Object
Optional
A dictionary containing the destinations to be either enabled or disabled.
The page
call allows you to record the page views on your website along with the other relevant information about the viewed page.
A sample page
call is as shown:
The page
method parameters are as described below:
Field
Type
Presence
Description
anonymousId
String
Optional
Sets the user ID for cases where there is no unique identifier for the user. Either userId
or anonymousId
is required.
userId
String
Optional, if anonymousId
is already set
Unique identifier for a particular user in your database.
context
Object
Optional
Dictionary of information that provides context about a message. However, it is not directly related to the API call.
integrations
Object
Optional
A dictionary containing the destinations to be either enabled or disabled.
name
String
Required
Name of the page being viewed.
properties
Object
Optional
Dictionary of the properties associated with the page being viewed, such as url
and referrer
timestamp
Date
Optional
The timestamp of the message's arrival.
The screen
call is the mobile equivalent of the page
call. It allows you to record the screen views on your mobile app along with the other relevant information about the app screen.
A sample screen
call is as shown:
The screen
method parameters are as described below:
Field
Type
Presence
Description
anonymousId
String
Optional
Sets the user ID for cases where there is no unique identifier for the user. Either userId
or anonymousId
is required.
userId
String
Optional, if anonymousId
is already set
Unique identifier for a particular user in your database.
context
Object
Optional
Dictionary of information that provides context about a message. However, it is not directly related to the API call.
integrations
Object
Optional
A dictionary containing the destinations to be either enabled or disabled.
name
String
Required
Name of the screen being viewed.
properties
Object
Optional
Dictionary of the properties associated with the page being viewed, such as url
and referrer
timestamp
Date
Optional
The timestamp of the message's arrival.
The group
call lets you associate an identified user to a group - either a company, project or a team and record any custom traits or properties associated with that group.
A sample group
call is as shown:
The group
method parameters are as follows:
Field
Type
Presence
Description
anonymousId
String
Optional
Sets the user ID for cases where there is no unique identifier for the user. Either userId
or anonymousId
is required.
userId
String
Optional, if anonymousId
is already set
Unique identifier for a particular user in your database.
context
Object
Optional
Dictionary of information that provides context about a message. However, it is not directly related to the API call.
integrations
Object
Optional
A dictionary containing the destinations to be either enabled or disabled.
groupId
String
Required
Unique identifier of the group, as present in your database.
traits
Object
Optional
Dictionary of the properties or traits associated with the group, such as email
or name
.
timestamp
Date
Optional
The timestamp of the message's arrival.
The alias
call allows you to associate one identity with another.
alias
is an advanced method that lets you change the tracked user's ID explicitly. This method is useful when managing identities for some of the downstream destinations.
A sample alias
call is as shown:
The alias
method parameters are as mentioned below:
Field
Type
Presence
Description
userId
String
Optional, if anonymousId
is already set
Unique identifier for a particular user in your database.
context
Object
Optional
Dictionary of information that provides context about a message. However, it is not directly related to the API call.
integrations
Object
Optional
A dictionary containing the destinations to be either enabled or disabled.
previousId
String
Required
The previous unique identifier of the user.
traits
Object
Optional
Dictionary of the properties or traits associated with the group, such as email
or name
.
timestamp
Date
Optional
The timestamp of the message's arrival.
For a detailed explanation of the alias
call, refer to our RudderStack API Specification guide.
This feature is only available from version 1.0.1
onwards.
If you want to block flush
until all the events are uploaded , the Java SDK has a builder method called synchronize()
with default value false
which needs to be set to true
.
An example for blocking the flush
is shown:
ImmutableMap
class?Yes. You need to use the Guava library. You can also use the plain old Java Maps instead.
For queries on any of the sections covered in this guide, you can contact us or start a conversation in our Slack community.