Get [?] when unicode Chinese "一"

[qiongli]

Many thanks for your junidecode lib!
But I get garbled output when I try to unicode Chinese one ("一").
System.out.println(net.gcardone.junidecode.Junidecode.unidecode("一"))
The output is as follow. It should be "yi".
[?]
Is it a bug？ is there a workaround?
Thanks again

[mouse0w0]

Please fix it.