How do you set up build triggers in Jenkins?

There are several ways in Jenkins to set up build triggers:

1. SCM change trigger: initiates a build when there are changes in the code within the source code management tool.
2. Scheduled trigger: You can schedule a build to trigger at a specific time, such as 3 AM every day.
3. Build Trigger: It can be set to trigger a build when another build is completed.
4. Remote trigger: Build can be triggered by calling the API provided by Jenkins.
5. Maven trigger: You can configure the pom.xml file of a Maven project to trigger a Jenkins build when it is being built.
6. External triggers: External systems can trigger builds through plugins, such as Jira, Gitlab, etc.

By using the methods above, triggers can be set up according to different needs to achieve the goal of automated construction.