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 # IComponentPlugIn

 Last update: 16.07.2025 

interface [IComponentPlugIn](index.md)

This is the interface that must be implemented by all Java plug-ins for ModelCenter. Please note that due to an issue in Java 8, we do not explicitly override [toString](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) here, but you still need to implement it.

## Functions

NameSummary[construct](construct.md)abstract fun [construct](construct.md)(mc: [ModelCenter](../-model-center/index.md), atm: [AddToModel](../-add-to-model/index.md))  
called when the plug-in is launched from ModelCenter[fromString](from-string.md)abstract fun [fromString](from-string.md)(state: [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html))  
Called to restore the state of a Plug-In.[onEnd](on-end.md)abstract fun [onEnd](on-end.md)()  
called when the plug-in is about to be deleted.[run](run.md)abstract fun [run](run.md)()  
called when the plug-in should run[show](show.md)abstract fun [show](show.md)(): [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)  
called to display the plug-in