---
title: "@ConvertFrom"
---
`@ConvertFrom` provides the deserializer with the path and file name of a pre-existing config file from an old config library.
Supported file types:
* `.toml`
* `.json`
* `.json5`
* `.jsonc`
The below example will read an old file `./minecraft/config/example/config.json` and scrape relevant data from it by converting it to TOML first and then using that converted file as input to the deserializer. The old file will be deleted afterward.
```java !!tabs Java
@ConvertFrom(fileName = "config.json", folder = "example")
public class ConfigImpl extends Config {
public ConfigImpl {
super(new Identifier.of("example", "config"));
}
//config stuff go here
}
```
```kotlin !!tabs Kotlin
@ConvertFrom("config.json", "example")
class ConfigImpl: Config(Identifier.of("example", "config")) {
//config stuff go here
}
```
See the documentation page here 🗗