Created singleton object can't be detected in main function (Scala) - package

Question

Singleton object LongLines which I created can't be recognized in object with main function (FindingLines). I put their files (LongLines.scala, FindingLines.scala ) in /src/main/scala/com/files/lines directory. Program code should have to find in particular file the lines which length is greater than parameter width.
Codes:
1) LongLines.scala (version from book I learn):
package com.files.lines
import scala.io.Source
object LongLines {
def processFile(filename: String, width: Int) {
val source = Source.fromFile(filename)
for (line <- source.getLines())
processLine(filename, width, line)
}
private def processLine(filename: String,
width: Int, line: String) {
if (line.length > width)
println(filename +": "+ line.trim)
}
}
2) LongLines.scala (my own version):
package com.files.lines
import scala.io.Source._
import java.nio.files.Paths._
object LongLines {
def processFile(filePath: String, width:Int): Unit = {
val path = get(filePath)
val fileName = path.getFileName.toString
val lines = fromFile(filePath).getLines().toList
for (line<-lines) processLines(fileName,line,width)
}
private def processLines(fileName: String, line: String, width: Int): Unit = {
if (line.length() > width) println(s"$fileName: $line");
}
}
3) FindingLines.scala (book version I used - only version):
package com.files.lines
object FindLongLines {
def main(args: Array[String]) = {
val width = args(0).toInt
for (arg <- args.drop(1))
LongLines.processFile(arg, width)
}
}
Error (compiled from linux terminal):
After I compiled program with my version and book version of LongLines.scala (separately, of course):
scalac FindingLines.scala
I've got this error:
FindLongLines.scala:15: error: not found: value LongLines
LongLines.processFile(arg, width)
^
one error found

Answer 1

Solution:
1) I removed "package com.file.lines" from both files (FindingLines.scala, LongLines.scala) - that means I need not to remove those files in this package (directory). Those two files could stay in src/main/scala directory.
2) scalac FindingLines.scala LongLines.scala
3) scala FindingLines.scala 45 ~/workspace/Rational/src/Rational.scala