virtualos/src/fr/eseo/os/User.java
public void addHistory(String command, Object caller){
        this.histories.add(command);
        this.setChanged();
        this.notifyObservers(caller);
    }
/**
     * Stores data in the history of the user
     * @param command to store
     */
Stores data in the history of the user
@param command to store
Stores data in the history of the user @param command to store
public void addHistory(String command, Object caller){
        this.histories.add(command);
        this.setChanged();
        this.notifyObservers(caller);
    }
public void addHistory ( String command , Object caller ) { this . histories . add ( command ) ; this . setChanged ( ) ; this . notifyObservers ( caller ) ; }
Stores data in the history of the user
 @param command to store
Stores data in the history of the user @param command to store