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learn_code49
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What is the difference between object and companion object in Kotlin? Examples
Hi everyone! I started learning Kotlin and I can't understand the difference between a regular object inside a class and a companion object.
Let's say I write a simple class for working with a database:
```kotlin
class DatabaseManager {
object Config {
val HOST = "localhost"
val PORT = 5432
}
companion object {
fun create(): DatabaseManager = DatabaseManager()
}
}
```
I see that both options create something similar to static members from Java. But why are there two different mechanisms? When should I use object and when companion object?
Maybe there are some nuances with inheritance, serialization, or access from Java? I would be grateful for a detailed explanation with examples.
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