File list (Check if you may need any files):
MCalculadora\build\built-jar.properties
............\.....\classes\Negocio\ArbolExpresion.class
............\.....\.......\.......\Calc.class
............\.....\.......\.......\Comprobador.class
............\.....\.......\.......\Expresion.class
............\.....\.......\.......\Nodo.class
............\.....\.......\.......\Pila.class
............\.....\.......\.......\Recorridos.class
............\.....\.......\.......\Tupla.class
............\.....\.......\Presentacion\Principal$1.class
............\.....\.......\............\Principal$2.class
............\.....\.......\............\Principal.class
............\build.xml
............\manifest.mf
............\nbproject\build-impl.xml
............\.........\genfiles.properties
............\.........\private\config.properties
............\.........\.......\private.properties
............\.........\project.properties
............\.........\project.xml
............\src\Negocio\ArbolExpresion.java
............\...\.......\Calc.java
............\...\.......\Comprobador.java
............\...\.......\Expresion.java
............\...\.......\Nodo.java
............\...\.......\Pila.java
............\...\.......\Recorridos.java
............\...\.......\Tupla.java
............\...\Presentacion\Principal.form
............\...\............\Principal.java
............\build\classes\Negocio
............\.....\.......\Presentacion
............\.....\classes
............\.....\empty
............\nbproject\private
............\src\Negocio
............\...\Presentacion
............\build
............\nbproject
............\src
............\test
MCalculadora