Question

class History  {

    public String[] history;

    public History(String[] history) {
       if (history == null)
           history = new String[]{};
       else 
           history = this.history
    }

}

It just keep saving null down no matter what i give it..
So can’t work with it..

Answer 1

Don’t you mean this?

else this.history = history;

You also have a mistake in this line:

history = new String[]{};

It should be:

this.history = new String[]{};

When I program, I never give local variables the same name as class variables. It only leads to confusion.