我有一个有2个类之间的关系:一个是抽象类区域和另一个是类KenKen。我有KenKen类中的Region类型的ArrayList。我如何访问Region类中的addValue?使用抽象类构成关系-java
的类如下:
啃啃:
public class KenKen {
private ArrayList<Region> regions;
public KenKen(String filename)throws FileNotFoundException{
//constructor
regions = new ArrayList<Region>();
//regions.addValue(0);//
}
public static void main(String[] args) throws FileNotFoundException{
KenKen kenken1 = new KenKen("input.1.txt");
}
}
地区:
public abstract class Region{
private int number = 0;
protected int target = 0;
protected ArrayList<Integer> values;
public Region(int number , int target){
this.number = number;
this.target = target;
//constructor
values = new ArrayList<Integer>();
}
public void addValue(int val){
}
public abstract boolean verify();
public String toString(){
}
}