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SUBSCRIBE TO RAM N JAVASpring Boot: Change the Default Port
Every Spring Boot developer knows that by default, the application starts on port 8080. But what happens when you need to run multiple applications at once? This guide explains how to change the default port and why it's a vital skill for any developer.
Why Change the Default Port?
The most common reason is a port conflict. If another application (like Jenkins, Oracle, or another Spring Boot project) is already using 8080, your application won't start. Changing the port allows you to run several microservices simultaneously on the same machine without any interference.
How to Do It Simply
The easiest way for beginners is using the application.properties file. By adding just one line of code, you can tell Spring Boot exactly which port to use:
Pro-Tip for Testing
If you set server.port=0, Spring Boot will automatically find a random available port for you. This is incredibly useful during automated testing or when you don't want to worry about manual port management.
Remember: Keeping your configuration separate from your code makes your application more professional and easier to maintain!
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