ServiceLoader loads services as singletons?

[Paulo Levi]

I've noticed something disturbing about service loader...
I thought its iterator returned a new object by default,
so i made a protected method in my abstract class to serve as a
"constructor" and i thought i was done.
A simple system.out.println reveals the horrible truth.

util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.ZipExtractor at 1e6ac83
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.ZipExtractor at 1e6ac83
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.ZipExtractor at 1e6ac83
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82
util.io.compressed.RarExtractor at 1ca3f82

So no way to specify that object returned by the iterator should always be
new? This should at least be specified in large and bold letters.
Preferably a setting with default create a new object would be better.
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