Does import with wildcard behave differently with user package

 //With these I am getting compilation - error class not found 
 /*import Shape.TwoD.*;
 import Shape.ThreeD.*;
 import Shape.*;*/

 import Shape.TwoD.Circle;
 import Shape.TwoD.Line;
 import Shape.ThreeD.Line3D;
 import Shape.ThreeD.Sphere;
 import Shape.Actions;

public class Test {

    /**
     * Creates a new instance of <code>Test</code>.
     */
     int o;
    public Test() {

    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Actions obj[] = new Actions[4];
        obj[0] = new Line(1,2,3,4);
        obj[1] = new Circle(1,2,3);
        obj[2] = new Line3D(1,2,3,4,5,6);
        obj[3] = new Sphere(1,2,3,4);
        for(Actions x: obj)
            x.draw();
        Actions.TwoD o =(Circle)obj[1];
        System.out.println("Area of circle "+o.area());
        o = (Sphere)obj[3];
        System.out.println("Volume of sphere "+o.area());
    }
}

Action is an interface which contains nested interface TwoD and ThreeD

Why import with wildcard not working in the above code? Am I using it wrong?

I couldn't find any related answer, if both wildcard and fully qualified imports are not working then there is problem in my code but in this case, compilation error occur class not found only when I use wildcard with import.

EDIT: Sorry for the wrong naming convention, Line,Circle,Line3D and Sphere are the classes Lineand Circle comes under Shape.TwoD

Line3D and Sphere comes under Shape.ThreeD

Actions.java:

package Shape;

public interface Actions {

        interface ThreeD{
            double volume();
        }

        interface TwoD{
            double area();
        }

        void draw();
        //void erase();
        final double pi = 3.142857;

}

Line.java:

    package Shape.TwoD;

public class Line implements Shape.Actions{

    BaseObj.Point p1,p2;

    public Line(int x1,int y1, int x2 ,int y2) {
        p1 = new BaseObj.Point(x1,y1);
        p2 = new BaseObj.Point(x2,y2);
    }

    public void draw(){
        //System.out.println("Line between ("+p1.x+","+p1.y+") and ("+p2.x+","+p2.y+"));
        System.out.println("Line between ("+p1.getx()+","+p1.gety()+") and ("+p2.getx()+","+p2.gety()+") has been drawn");
    }

}

Circle.java:

package Shape.TwoD;

public class Circle extends BaseObj.Point implements Shape.Actions, Shape.Actions.TwoD{

    protected int radius;

    public Circle(int x, int y, int radius) {
        super(x,y);
        this.radius = radius;
    }

    public void draw(){
        System.out.println("Circle with ("+x+","+y+") as center and radius "+radius+" units has been drawn");
    }

    public double area(){
        return (pi*radius*radius);
    }

}

Line3D.java:

package Shape.ThreeD;
public class Line3D  implements Shape.Actions {

    BaseObj.Point3D p1,p2;

    public Line3D(int x1,int y1, int z1, int x2,int y2, int z2) {
        p1 = new BaseObj.Point3D(x1,y1,z1);
        p2 = new BaseObj.Point3D(x2,y2,z2);
    }

    public void draw(){
        //System.out.println("Line between ("+p1.x+","+p1.y+") and ("+p2.x+","+p2.y+"));
        System.out.println("Line between ("+p1.getx()+","+p1.gety()+","+p1.getz()+") and ("+p2.getx()+","+p2.gety()+","+p2.getz()+") has been drawn");
    }

}

Sphere.java:

package Shape.ThreeD;
public class Sphere extends Shape.TwoD.Circle{

    int z;

    public Sphere(int x, int y, int z, int radius) {
        super(x,y,radius);
        this.z = z;
    }

    public void draw(){
        System.out.println("Spere with ("+x+","+y+","+z+") as center and radius "+radius+" units has been drawn");
    }

    public double volume(){
        return(radius*radius*pi*4/3);
    }

    public double area(){
        System.out.println("Sphere is a 3D object so 2D quantitys doesnt apply");
        return 0.0;
    }
}

Edit2: After correcting the names I got error that Actions interface is duplicate so I changed its name into ObjActions and the problem resolved. Thanks for the help. I hope the naming convention I used below is consistent with standard.

ObjActions.java

package shape;

public interface ObjActions {

        interface Actions3D{
            double volume();
        }

        interface Actions2D{
            double area();
        }

        void draw();
        //void erase();
        final double pi = 3.142857;

}

Circle.java

package shape.twod;

public class Circle extends baseobj.Point implements shape.ObjActions, shape.ObjActions.Actions2D{

    protected int radius;

    public Circle(int x, int y, int radius) {
        super(x,y);
        this.radius = radius;
    }

    public void draw(){
        System.out.println("Circle with ("+x+","+y+") as center and radius "+radius+" units has been drawn");
    }

    public double area(){
        return (pi*radius*radius);
    }

}

Line.java

package shape.twod;

public class Line implements shape.ObjActions{

    baseobj.Point p1,p2;

    public Line(int x1,int y1, int x2 ,int y2) {
        p1 = new baseobj.Point(x1,y1);
        p2 = new baseobj.Point(x2,y2);
    }

    public void draw(){
        //System.out.println("Line between ("+p1.x+","+p1.y+") and ("+p2.x+","+p2.y+"));
        System.out.println("Line between ("+p1.getx()+","+p1.gety()+") and ("+p2.getx()+","+p2.gety()+") has been drawn");
    }

}

Line3D.java

package shape.threed;

public class Line3D  implements shape.ObjActions {

    baseobj.Point3D p1,p2;

    public Line3D(int x1,int y1, int z1, int x2,int y2, int z2) {
        p1 = new baseobj.Point3D(x1,y1,z1);
        p2 = new baseobj.Point3D(x2,y2,z2);
    }

    public void draw(){
        //System.out.println("Line between ("+p1.x+","+p1.y+") and ("+p2.x+","+p2.y+"));
        System.out.println("Line between ("+p1.getx()+","+p1.gety()+","+p1.getz()+") and ("+p2.getx()+","+p2.gety()+","+p2.getz()+") has been drawn");
    }

}

Sphere.java

package shape.threed;

public class Sphere extends shape.twod.Circle implements shape.ObjActions.Actions3D{

    int z;

    public Sphere(int x, int y, int z, int radius) {
        super(x,y,radius);
        this.z = z;
    }

    public void draw(){
        System.out.println("Spere with ("+x+","+y+","+z+") as center and radius "+radius+" units has been drawn");
    }

    public double volume(){
        return(radius*radius*pi*4/3);
    }

}

Test.java

package test;

 import shape.twod.*;
 import shape.threed.*;
 import shape.*;


 /*import shape.twod.Circle;
 import shape.twod.Line;
 import shape.threed.Line3D;
 import shape.threed.Sphere;
 import shape.Actions;*/

public class Test {

    /**
     * Creates a new instance of <code>Test</code>.
     */
     int o;
    public Test() {

    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        ObjActions obj[] = new ObjActions[4];
        obj[0] = new Line(1,2,3,4);
        obj[1] = new Circle(1,2,3);
        obj[2] = new Line3D(1,2,3,4,5,6);
        obj[3] = new Sphere(1,2,3,4);
        for(ObjActions x: obj)
            x.draw();
        ObjActions.Actions2D o =(Circle)obj[1];
        //Actions2D o =(Circle)obj[1];
        System.out.println("Area of circle "+o.area());
        ObjActions.Actions3D op = (Sphere)obj[3];
        System.out.println("Volume of sphere "+op.volume());
    }
}