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javajvmclassloader

which classloader responsible for loading endorsed dir jars into JVM?

I am asking this question for my knowledge. in java we have three class loaders bootstrap, system and extension class loaders. in this which one will do actual loading of endorsed jars?

Solution

  • By the bootstrap class loader.

    See the relevant HotSpot sources:

    // Constructs the system class path (aka boot class path) from the following
// components, in order:
//
//     prefix           // from -Xbootclasspath/p:...
//     endorsed         // the expansion of -Djava.endorsed.dirs=...
//     base             // from os::get_system_properties() or -Xbootclasspath=
//     suffix           // from -Xbootclasspath/a:...
//
// java.endorsed.dirs is a list of directories; any jar or zip files in the
// directories are added to the sysclasspath just before the base.