import java.util.*;
import java.util.regex.*;
import static java.lang.Math.*;
/**
 * A RecordOfRecords holds classes for comparing to Ada
 * 
 * @see http://www.radford.edu/itec320/2018fall-ibarland/Lectures/records-of-records.html
 * 
 * @author ibarland@radford.edu
 * @version 2018-Oct-17
 *
 * License: CC Attribution 4.0 International -- you are free to share and adapt
 * this material for any purpose, provided you include appropriate attribution.
 *   https://creativecommons.org/licenses/by/4.0/ 
 *   https://creativecommons.org/licenses/by/4.0/legalcode 
 * Including the source material's URL satisifies "appropriate attribution".
 */
class NestedRecords {
    public static void main( String[] __ ) {
        p = new Point(1,6);
        q = new Point(7,2);
        l = new Line(p,q);
        Line everywhere = new Line( new Point(0,0), new Point(0,0) );
        }
    public static Point p,q;
    public static Line l, origin;
    }

class Point {
    int x,y;
    String name = "goodness gracious!";
    
    Point(int _x, int _y) {
        this.x = _x;
        this.y = _y;
        }
    public String toString(/* Point this */) { return "new Point("+this.x+", "+this.y+")"; }
    }
    
class Line {
    Point start, end;
    
    Line( Point _start, Point _end ) {
        this.start = _start;
        this.end = _end;
        }
    public String toString(/* Line this */) { return "new Line("+this.start.toString()+", "+this.end.toString()+")"; }
    }

    
    
class LineList {
    final int CAPACITY;
    Line[] lines;
    int size;

    void add( /* LineList this, */ Line p ) {
        this.lines[size] = p;
        size = size + 1;
        }

    LineList( int _CAPACITY ) {
        this.CAPACITY = _CAPACITY;
        this.lines = new Line[this.CAPACITY];
        this.size = 0;
        }
        
    }