I need to retrieve recursively the list of `.java` files given a root folder to redirect to `javac` ...

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[elect]

I need to retrieve recursively the list of .java files given a root folder to redirect to javac . Isn't there a nicer kotlin alternative to this?

val sources = Files.find(Paths.get(srcDir), 999, { path, attr ->
            attr.isRegularFile && path.toString().endsWith(".java")
        }).map { it.toString() }.collect(Collectors.joining(" "))

Files.find returns a Stream<Path!>! and I need to go trough map + collect + Collectors instead something more concise

[Dominaezzz]

Best I could do.

File(srcDir).walk().maxDepth(999)
	.filter { it.isFile && it.extension == "java" }
	.joinToString(" ") { it.toString() }

[elect]

I like it, thanks dear

[Ruckus]

I think it.toString() is the default behavior for joinToString, so you could just use .joinToString(" ")