Mule properties files allow configuration values to be externalized and parameterized. Property placeholders can be used to reference values defined in properties files from within Mule configurations. Values for placeholders can come from global properties, property files, environment variables, or runtime arguments, with earlier sources taking priority over later ones. Properties files provide a way to manage configurations across different environments like development, testing, and production.

1. Mule
Properties
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2. PROPERTIES
• A properties file is a simple collection of key-value pairs that can
be parsed by the java.util.Properties class. They are often used to
store configuration or localization data. In mule properties file
can be configured using property placeholders and system
properties.
Property Placeholders:
• Property placeholders allow you to upload the parameters from
a properties file. This enables you, for example, to have different
property files for different environments (Dev, QA, and Prod).

3. • It also allows you to reuse the same value in different parts of
your configuration.
• A very simple example shows how to use the property
placeholders.
• The values for these placeholders can be made available in a
variety of ways, as described in the sections below.

4. Global Properties:
You can use the <global-property> element to set a placeholder
value from within your Mule configuration, such as from within
another Mule configuration file that are configured as below:

6. Property Files:
To load the properties from a file, you can use the standard spring
element <context: property-placeholder>.

7. • Where the contents of the test.properties is:
• To load multiple properties files, separate them with
commas:

8. Example:
• The example above tries to display the property name which is
a common property from various sources the observation is as
below:

9. Observation:
• The property in the mule-app.properties is prioritized the most,
Global variables is prioritized the next most and next is the run
time arguments followed by Environment Variables and then
follows the property files in alphabetical order.

10. •Thank You All