Build of Java version with and without primitive types

[jlahoda]

boxed-sieve.zip
primitive-sieve.zip

[jtulach]

The above ZIP files (in fact JAR) files contain compiled classes from Natural, Filter, Primes sources - one version is using Java primitive types (e.g. int and long) and the other is using boxed versions (java.lang.Integer and java.lang.Long). To execute the programs use:

$ wget https://github.com/jtulach/sieve/files/124753/boxed-sieve.zip
$ java -jar boxed-sieve.zip

and

$ wget https://github.com/jtulach/sieve/files/124754/primitive-sieve.zip
$ java -jar primitive-sieve.zip

Right now the primitive version is >2x faster than the boxed one. However (with a good JVM) there is no reason for that...

[jlahoda]

Attaching two more files:
boxed-sieve2.zip: similar to boxed-sieve.zip, but some unnecessary unboxing&reboxing removed/fixed.

almost-primitive-siever.zip: a version where Filter is not keeping a primitive value, but rather a boxed value, using this patch:

--- Filter.java 2016-02-03 14:28:44.000000000 +0100
+++ Filter.java 2016-02-15 14:52:29.867059042 +0100
@@ -1,7 +1,7 @@
 package org.apidesign.demo.sieve.js;

 final class Filter {
-    private final int number;
+    private final Integer number;
     private final Filter next;

     public Filter(int number, Filter next) {