//Boat Inventory Program
//Author: Rayno Niemi
//Purpose:  Definition of a Boat class with color and length

public 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