A script to identify how many longs can we store at a time with given heap size on JVM

howManyLongsCanWeLoad.scala

import scala.collection.mutable.ArrayBuffer
import scala.util.Random

object M {
  def main(args: Array[String]) {
    val t = new ArrayBuffer[Long]()
    while (true) {
      t += Random.nextLong
      if (t.length % 10000 == 0) {
        System.gc()
        println(s"${t.length}")
      }
    }
  }
}