找不到符號（它在那裏）

我在netbeans的maven項目中有以下行。找不到符號（它在那裏）

Projection projection = two.translate(Vector.reg1).projection(direction);

兩者是一個Shape實例。

public abstract class Shape { 
    public double mass; 
    public double momentOfIntertia; 
    public Vector center; 
    public abstract List<Edge> normals(Vector direction); 
    public abstract Projection projection(Vector line); 
    public abstract Shape transform(Transformation transformation); 
    public abstract Shape translate(Vector translation); 
    public abstract void render(Graphics graphics); 
}

當我編譯我得到這個錯誤。

[ERROR]BUILD FAILURE 
------------------------------------------------------------------------ 
Compilation failure 

org/curious/pounce/Collision.java:[89,39] cannot find symbol 
symbol : method translate(org.curious.pounce.math.Vector) 
location: class org.curious.pounce.Shape

我不確定這可能是什麼問題，如果有什麼錯誤netbeans應該指出在IDE中的錯誤，它不是。

來源

2011-03-08 HahaHortness