> For the complete documentation index, see [llms.txt](https://educacion.gitbook.io/programacion/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://educacion.gitbook.io/programacion/exercicios-java/ud4-exercicios/excepcions.md).

# Excepcions

1. Para unha das clases Persona definidas en exercicios anteriores:
   1. Define una excepción tipo Checked denominada ExcepcionDNIInvalido, que se vai a lanzar cando o DNI teña mais de 9 caracteres
   2. Define unha excepción tipo Unchecked denominada ExcepcionIdadeNegativa, que se vai a lanzar cando se estableza unha idea
   3. ¿Cal dos dúas excepcions require que a firma do método que a emprega declare un throws?
   4. Implementa unha clase App con un main no que se force a lanzar as excepcions seguintes. Non é necesario duplicar o codigo, emprega o mesmo comentando e descomentando as chamadas que provocan o lanzamento de excepcións. Esta clase debe contolar o lanzamento de estas excepcions concretas ou de excepcion xenericas de forma adecuada
   5. Engade a clausula correspondente, para que sempre se mostre por pantalla a mensaxe "Programa finalizado", independentemente de que o programa se execute lanzando exepcións ou sen lanzala


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