BeginnerOOP

Companion Factory

Create instances through a companion factory.

kotlin
class Token private constructor(val value: String) {
    companion object {
        fun create(raw: String) = Token(raw.trim())
    }
}

fun main() {
    println(Token.create("  abc  ").value)
}

Output

abc

Explanation

Private constructor hides direct construction. companion object create() is the public API.

Companion Factory

Explanation

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