To read characters into your program, use the method 'getKey' from the Greenfoot class API. To display the characters, use 'drawString' to draw the characters on a GreenfootImage object that is being displayed or create a new GreenfootImage of the character and use 'drawImage' to draw the image on a displayed image, or create a new image and a new object and have that object display the image. Look over the classes provided within the greenfoot package -- particularly in the Greenfoot and GreenfootImage classes. You do not have to memorize everything; just familiarize yourself with what constructors and methods are available and know how to reference them when needed.

thanks for the tip, tried to do so, but it did not work. I tried to do the following: I made a variable h = 0, and when you press button 1 h sum. when tightening t, the total should appear h. I though the code appears random numbers attached the following code: (And once again sorry for the english google) import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) import java.awt.Color; import java.awt.Font; /** * Write a description of class Exit here. * * @author (your name) * @version (a version number or a date) */ public class Exit extends Actor { private int h=0; /** * Act - do whatever the Exit wants to do. This method is called whenever * the 'Act' or 'Run' button gets pressed in the environment. */ public void act() { if (Greenfoot.isKeyDown ("h")){ h++; } if (Greenfoot.isKeyDown ("t")) { GreenfootImage img = new GreenfootImage(200, 300); img.setColor(Color.BLACK); float fontSize = 35.0f; Font font = img.getFont(); font = font.deriveFont(fontSize); img.setFont(font); img.setFont(font); img.drawString("o total é " + h, 30, 20); setImage(img); } } }

Use:

Use this code where? in place of which part?