How to read external properties file in java

The property file is a file we use in the Java Programming language to keep the configuration parameters.

Java config file location

These files we called Resource Bundle because it is a bundle of resources that we are going to use in the application.

What are the configuration parameters?

Configuration parameters are the parameters that you use at the time of configuring your database, or any validation is there in the project you can add them as configuration parameters.

Example: You must have used DBConnect class for Database connection in your Java-based web application.

We keep all the database URLs, database names, database drivers inside this class. Instead of writing this configuration parameter inside this class, we can create a system.properties file inside your resource folder of the java project.

The extension we use for the properties file is .properties.

Let us see the properties files:

• Everything in the properties file is present in key-value pairs.
• So, in order to access any value from this file, we can use the key

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