Make a link between two events

Hi,
I have two events :

Code:

public void tapeCommand(PlayerCommandPreprocessEvent e){ ... }
public void ouvreCoffre(PlayerInteractEvent e){ ... }

I would like to execute my code in the second event if the command was typed.
I have tried to link the two with a variable but once the order has been entered all players can use the second part.

I hope I was clear ^^

Tried doing a separate method that gets passed over all the variables that you need and both events can offer?

I'm newbie to java, I start ...
Can you write a few lines of code?

Code:java

 
public void event1(Event e){
        run(e.getPlayer);
}
public void event2(Event e){
        run(e.getPlayer);
}
public void run(Player p){ //and any other information you can get from both events that you may need
}
 

I don't understand, can you me explain a little ?