Class GeneralGuesser also has to implement the constructor and setFirstGuess, but generally, that is it.

package packt.java9.by.example.mastermind; 
  
public class GeneralGuesser extends Guesser { 
  
     public GeneralGuesser(Table table) { super(table); } 
  
     @Override 
     protected void setFirstGuess() { 
         int i = 0; 
         for (Color color = table.manager.firstColor();  
                                    i < lastGuess.length; ) { 
             lastGuess[i++] = color; 
         } 
     } 
  
 }

Setting the lastGuess it just puts the first color on all columns. Guess could not be simpler. Everything else is inherited from the abstract class Guesser.