net.corda.core.node / AttachmentsClassLoader / <init>

# <init>

`AttachmentsClassLoader(attachments: List<Attachment>, parent: ClassLoader = ClassLoader.getSystemClassLoader())`

A custom ClassLoader that knows how to load classes from a set of attachments. The attachments themselves only need to provide JAR streams, and so could be fetched from a database, local disk, etc. Constructing an AttachmentsClassLoader is somewhat expensive, as every attachment is scanned to ensure that there are no overlapping file paths.