What is Maven resource filtering?

• A. It gives project files access to properties defined in pom.xml's <properties> scope.
• B. It encrypts properties during build
• C. It compiles resources to optimized forms
• D. It copies resources unchanged

Answer: (A)

Resource filtering in Maven is the process of replacing placeholders in resource files with values drawn from the build, typically from properties defined in the pom.xml or from external filter files. When you enable filtering for resources, Maven copies each resource and substitutes tokens like ${property.name} with the corresponding value (for example project.version or a custom property you defined). This lets you inject environment-specific configuration into resources at build time without hardcoding values.

That’s why the best answer is that resource filtering makes project files able to use properties defined in the pom.xml’s scope. It is not about encrypting properties, nor about compiling or optimizing resources, and it certainly isn’t about copying resources unchanged.