The Java Program: BodyMain3.java

  1 class Body {
  2    long idNum;
  3    String nameFor;
  4    Body orbits;
  5 
  6    static long nextID = 0;
  7 
  8    Body () {
  9       idNum = nextID++;
 10    }
 11 
 12    Body (String n) {
 13       idNum = nextID++;
 14       nameFor = n;
 15       orbits = null;
 16    }
 17 
 18    Body (String n, Body o) {
 19       idNum = nextID++;
 20       nameFor = n;
 21       orbits = o;
 22    }
 23 
 24 }
 25 
 26 class BodyMain3  {
 27 
 28    public static void main (String args[])  {
 29 
 30       Body sun   = new Body("Sol", null);
 31       Body earth = new Body("Earth", sun);
 32 
 33    }
 34 
 35 }