Alternate names: PlatformClassShadowing

The problem

Declaring a top-level class whose binary name already exists on the compilation bootclasspath or platform modules (StandardLocation.PLATFORM_CLASS_PATH or StandardLocation.SYSTEM_MODULES) shadows the platform class during compilation or at runtime depending on classloader delegation order, which can cause unexpected linkage errors, duplicate class conflicts, or subtle behavioral mismatches.

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("BootclasspathShadowing") to the enclosing element.