$ time ../j903/bin/jconsole llil4.ijs big1.txt big2.txt big3.txt out_j.txt 
Read and parse input:    1.6121
Classify, sum, sort:     2.23621
Format and write output: 1.36701
Total time:              5.21532

real    0m5.220s
user    0m3.934s
sys     0m1.195s

$ time ../j903/bin/jconsole llil5.ijs big1.txt big2.txt big3.txt out_j.txt 
Read and parse input:    1.40811
Classify, sum, sort:     1.80736
Format and write output: 0.373946
Total time:              3.58941

real    0m3.594s
user    0m2.505s
sys     0m0.991s

$ diff vec6.tmp out_j.txt 
$