I started a scenario that has a List variable in the world.class; but I cannot figure out how to add String entries into the list. I keep getting a NullExceptionPointer message. The basic code producing the error is:
What action do I need to take to correct the problem? AnyOne? (Thanx)
I also tried removing first part of line 11: 'boolean itemAdded = '
import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) import java.util.*; public class myWorld extends World { public List<String>listData; public myWorld() { super(550, 330, 1); boolean itemAdded = listData.add("First item"); } public void act() { } }