I am told to write out the signature of each method called in Listings 1.10 and 1.11. :

Listing 1.10
Java Code:
public class BuyAndHoldPortfolio
{
     public void describeInvestmentChoices()
     {    System.out.println ("You have 5 ways to invest.");
     }    //======================

     
     public void waitForYears (int years)
     {    System.out.println ("Wait for your money to grow.");
     }    //======================


     public void displayCurrentValues()
     {    System.out.println ("You now have lots of money.");
     }    //======================
}
Listing 1.11
Java Code:
public class FractalApp
{
     // Draw a Pythogorean tree.

     public static void main (String[ ] args)
     {    FractalTurtle pythagoras;
          pythagoras = new FractalTurtle();
          pythagoras.move (90, -240);
          pythagoras.drawTree (80);
     }    //======================
}
I am not sure what a signature is or how to write it. So can you tell me what they are for these exercises? Thanks.