How to reload a class or package in Scala REPL?

Question

I almost always have a Scala REPL session or two open, which makes it very easy to give Java or Scala classes a quick test. But if I change a class and recompile it, the RE

Answer 1

This works for me....

If your new source file Test.scala looks something like this...

package com.tests

object Test {
  def hello = "Hello World"
  def goodbye = "Goodbye, Cruel World"
}

You first have to load the new changes into Scala console (REPL).

:load src/main/scala/com/tests/examples/Test.scala

Then re-import the package so you can reference the new code in Scala console.

import com.tests.Test

Now enjoy your new code without restarting your session :)

scala> Test.goodbye
res0: String = Goodbye, Cruel World