pq = newJava["java.util.PriorityQueue", new Comparator[byColumn[0]]]

pq.add[[3, "Clear Drains"]]
pq.add[[4, "Feed cat"]]
pq.add[[5, "Make tea"]]
pq.add[[1, "Solve RC tasks"]]
pq.add[[2, "Tax return"]]

while ! pq.isEmpty[]
   println[pq.poll[]]