Class loaders exist in a hierarchy and every class loader has a parent class loader. The parent class loader is “consulted first” to “avoid loading same class several times.” In Java EE ...

In Java 8, you can cast the system class loader to a URLClassLoader. This is usually done by applications and libraries that want to inject classes into the classpath at runtime.

Classes loaded by custom class loaders that need to be unloadable cannot be since the ClassByNameCache is strongly referencing one of the loaded classes that has been pulled through serialization. The ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...