Checked and Unchecked exceptions in Scala

FakeService.java

public class FakeService {

    public class CustomCheckedException extends Throwable {}
    public class CustomUncheckedException extends RuntimeException {}

    public void doSomethingWithCheckedExceptions() throws CustomCheckedException {
        throw new CustomCheckedException();
    }

    public void doSomethingWithUncheckedExceptions() {
        throw new CustomUncheckedException();
    }
}

Main.scala

object Main {

  // Note that main does not need to declare that it can throws the checked exception CustomCheckedException
  def main(args: Array[String]): Unit = {
    val fs = new FakeService()
    fs.doSomethingWithUncheckedExceptions() // Compiles and throws a CustomUncheckedException
    fs.doSomethingWithCheckedExceptions() // Compiles and throws a CustomCheckedException
  }

}