Hash of ... ( Integer & Array of Integer )

//package geometry;

// javac Geometry.java && java Geometry

import java.util.*;

class Point {
    public double id = 0;
    public double y = 0;
    public double x = 0;
    public double m = 0;
    public int srid = 0;
    public void Point(double y, double x, double m) {
        this.y=y;
        this.x=x;
        this.m=m;
    }
}
/*
class LineString {
    public Map<Integer, ArrayList<Point>> line = new HashMap<Integer, ArrayList<Point>>();
}
class Polygon {
    public Map<Integer, LineString> polygon = new HashMap<Integer, LineString>();
}
class MultiPolygon {
    public Map<Integer, Polygon> multipolygon = new HashMap<Integer, Polygon>();
}
*/

class Geometry {

    Map<Integer, HashMap<Integer, HashMap<Integer, ArrayList<Integer> > > > multipolygons =
   new HashMap<Integer, HashMap<Integer, HashMap<Integer, ArrayList<Integer> > > >();

    public static void main(String[] args) {
        System.out.println("Hello World!");

        Point p = new Point();
        p.y=100;p.x=100;
        System.out.println(p.toString()+": "+p.y+", "+p.x+", "+p.m);

        //multipolygons.put(1, new HashMap<2, new HashMap<3, new ArrayList<Integer> > > >();
        //multipolygons.get(1, new HashMap<Integer, HashMap<Integer, ArrayList<Integer> > > );

        //2, new HashMap(3, new ArrayList<Intgeger>(Arrays.asList(10, 20, 30)) ) ) );
        //System.out.println(multipolygons.toString());

        List<List<Integer>> marks = new ArrayList<>();
        marks.add(new ArrayList<Integer>( Arrays.asList(10, 20, 30) ));
        marks.add(new ArrayList<Integer>( Arrays.asList(11, 22, 33) ));
        System.out.println(marks.toString());

        HashMap<String,ArrayList<Integer>> map = new HashMap<String,ArrayList<Integer>>();
        map.put("mango", new ArrayList<Integer>()); map.get("mango").add(4); map.get("mango").add(44);
        map.put("maMgo", new ArrayList<Integer>()); map.get("maMgo").add(45345); map.get("maMgo").add(5345); map.get("maMgo").add(34543);
        System.out.println(map.toString());

        HashMap< Integer, HashMap< Integer, ArrayList< Integer > > > map2 = new HashMap< Integer, HashMap< Integer, ArrayList< Integer > > >();
        map2.put(2, new HashMap< Integer, ArrayList< Integer > >() );
        map2.get(2).put(20, new ArrayList< Integer >() );
        map2.get(2).get(20).add(22); map2.get(2).get(20).add(23);
        System.out.println(map2.keySet() +" "+map2.toString());

        // Hash of ( Integer & ( Hash of ( Integer & ( Hash of ( Integer & ( Hash of ( Integer & Array of Integer ) ) ) ) ) ) )
        HashMap< Integer, HashMap< Integer, HashMap< Integer, ArrayList< Integer > > > > map3 =
                                    new HashMap< Integer, HashMap< Integer, HashMap< Integer, ArrayList< Integer > > > >();
        map3.put(3,                                   new HashMap< Integer, HashMap< Integer, ArrayList< Integer > > >() );
        map3.get(3).put(20,                                             new HashMap< Integer, ArrayList< Integer > >() );
        map3.get(3).get(20).put(33, new ArrayList< Integer >() );
        map3.get(3).get(20).get(33).add(41);
        map3.get(3).get(20).get(33).add(42);
        map3.get(3).get(20).get(33).add(43);
        System.out.println(map3.toString());

        //

    }
}

/*
RESULT:

q:>javac Geometry.java && java Geometry
Hello World!
Point@15db9742: 100.0, 100.0, 0.0
[[10, 20, 30], [11, 22, 33]]
{maMgo=[45345, 5345, 34543], mango=[4, 44]}
[2] {2={20=[22, 23]}}
{3={20={33=[41, 42, 43]}}}

*/