src/main/java/Manager.java
/**
     * list all categories
     *
     * @return  String with all categories
     * @author  Matheus de Andrade
     * @author  Pedro Henrique
     * @version 1.0
     */
list all categories
@return  String with all categories
@author  Matheus de Andrade
@author  Pedro Henrique
@version 1.0
list all categories @return String with all categories @author Matheus de Andrade @author Pedro Henrique @version 1 . 0
public String listCategories(){
        String text = "\n";
        for (int index = 0 ; index < categories.size() ; index++){
            text = text + categories.get(index).toString() + "\n";
        }
        return text;
    }
public String listCategories ( ) { String text = "\n" ; for ( int index = 0 ; index < categories . size ( ) ; index ++ ) { text = text + categories . get ( index ) . toString ( ) + "\n" ; } return text ; }
list all categories
 @return  String with all categories
 @author  Matheus de Andrade
 @author  Pedro Henrique
 @version 1.0
list all categories @return String with all categories @author Matheus de Andrade @author Pedro Henrique @version 1 . 0