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aoiroaoino/unload_class.scala

Created October 5, 2019 18:11
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unload_class.scala
import scala.language.existentials
import java.net._
var loader = new URLClassLoader(Array(new URL("file:///tmp/example/")))
val wrCat = new java.lang.ref.WeakReference(loader.loadClass("example.Cat"))
println("=== class cat: " + wrCat.get)
println("~~~ remove loader ~~~")
loader = null
System.gc()
println("=== class cat: " + wrCat.get)
println("")
/*
=== class cat: class example.Cat
~~~ remove loader ~~~
=== class cat: null
*/
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aoiroaoino commented Oct 5, 2019

https://twitter.com/todesking/status/1180540229473595392

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