JRuby : How to specify java primitive array

Question

How can I specify Java primitive array?

Java Object array type can be specified like

['a'].to_java(:string).is_a? java.lang.String[] -> true

but I don't know how to pass Java primitive array class.

[1].to_java(:byte).is_a? ???

[1].to_java(:byte).is_a? byte[] NameError: undefined local variable or method `byte' for main:Object

[1].to_java(:byte).is_a? :'byte[]' TypeError: class or module required

[1].to_java(:byte).is_a? java.lang.byte[] ArgumentError: illegal package name component: byte

What is a JRuby type of java primitive array type?

yasuyuki · Accepted Answer · 2017-10-27 09:30:51Z

2

I found an answer.

[1].to_java(:byte).is_a?([].to_java(:byte).class) -> true

answered Oct 27, 2017 at 9:30

yasuyuki

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