How to Load Properties Files from a Package in Java?

Loading Properties File from Java Package

Loading properties files buried within package structures can be a challenge, especially when seeking independence from servlet containers. To load a properties file from a package, consider the following:

Loading Properties from Within the Package:

To load properties from a file within the same package (com.al.common.email.templates), use the following approach:

<code class="java">Properties prop = new Properties();
InputStream in = getClass().getResourceAsStream("foo.properties");
prop.load(in);
in.close();</code>

Exception Handling

Remember to handle any necessary exceptions while loading the properties.

Loading Properties Outside the Package:

If your class is not within the specified package, adjust the input stream acquisition:

<code class="java">InputStream in = 
getClass().getResourceAsStream("/com/al/common/email/templates/foo.properties");</code>

Relative Paths and Absolute Paths:

• Relative paths (without a leading '/') in getResource()/getResourceAsStream() search for resources relative to the directory representing the class's package.
• Absolute paths (starting with '/') ignore the current package.

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