``` companion object { const val A = "A" p...
# android
s
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companion object {
    const val A = "A"
    private const val B = "B"
}
A is visible from Java. The “Companion” is visible from Java.
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private companion object {
    const val C = "C"
    private const val D = "D"
}
C is visible from Java The “Companion” is visible from Java, but deprecated (😕).