Provide class headers (a brief description of the class), method headers (a brief description of the methods and parameters), and additional comments where appropriate for the following block of Java Code.

public class Package { private int weight; private char method; private double cost; final char AIR = 'A'; final char TRUCK = 'T'; final int LOWWT = 9; final double LOWAIR = 2.00; final double LOWTRUCK = 1.50; final double LOWMAIL = 0.50; final int MEDWT = 17; final double MEDAIR = 3.00; final double MEDTRUCK = 2.35; final double MEDMAIL = 1.50; final double HIGHAIR = 4.50; final double HIGHTRUCK = 3.25; final double HIGHMAIL = 2.15; public Package(int w, char m) { weight = w; method = m; cost = calculateCost(w, m); }

private double calculateCost(int w, char m) { double c; if(w < LOWWT) { if(m == AIR) c = LOWAIR; else if(m == TRUCK) c = LOWTRUCK; else c = LOWMAIL; } else if(w < MEDWT) { if(m == AIR) c = MEDAIR; else if(m == TRUCK) c = MEDTRUCK; else c = MEDMAIL; } else { if(m == AIR) c = HIGHAIR; else if(m == TRUCK) c = HIGHTRUCK; else c = HIGHMAIL; } return c; }

public void display() //money format// { System.out.println("The package weighs " + weight + " pounds. Ship method " + method + "Cost $" + cost); } public double getCost() //get cost method// { return cost; } public void increaseCost(double c) { cost = cost + c; } }