//Boat Inventory Program//Author: Rayno Niemi//Purpose: Definition of a Boat class with color and lengthpublic abstract class Boat implements BoatConstants{ private String colour; //color of boat private int len; //length of boat //valid boat colors final private static String[] BOAT_COLOR = {"white", "red", "blue"}; /** *Creates a default Boat */ public Boat( ) { //create a boat with default color and length this(BOAT_COLOR[0], 10); } /** *Creates a new instance of Boat *@param colour - color of boat *@param len - length of boat */ public Boat(String colour, int len) { if (!setColor(colour)) { //invalid color - set to default this.colour = BOAT_COLOR[0]; } if (!setLength(len)) { //invalid length - set to default this.len = 10; } } /** *Get color of boat *@returns color of the boat as a String */ public String getColor() { return colour; } /** *set color of boat *@param colour - new colour for boat *@returns true if color is valid; otherwise false */ public boolean setColor(String colour) { //check parameter value with list of valid colors for (int k=0; k < BOAT_COLOR.length; k++) { if ( colour.equals(BOAT_COLOR[k]) ) { //valid color found this.colour = colour; return true; } } //invalid color - do not change color return false; } /** *Get length of boat *@returns length of boat as an int */ public double getLength() { return this.len; } /** *set length of boat - must be 10 feet or greater *@param len - new len for boat *@returns true if len is valid; otherwise false */ public boolean setLength(int len) { if (len >= 10) { //valid length this.len = len; return true; } else { //invalid length return false; } } /** *Convert boat into a string with attribute values *@return String with color and length */ public String toString( ) { return "Color: " + getColor() + " Length: " + getLength(); } }//end class