Untitled

public class WoodenColumn {
	
	private double height; //inches
	private double width;  //inches
	private double expectedLoad; //pounds
	public int count; //number of columns 
	
	public WoodenColumn()
	{
		height = 8 * 12;
		width = 3.625;
		expectedLoad = 100; //100 psi
	}

	public WoodenColumn(double height, double width, double expectedLoad)
	{
		this.height = height;
		this.width = width;
		this.expectedLoad = expectedLoad;
	}

	public double getHeight()
	{
		return height;
	}

	public double getWidth()
	{
		return width;
	}

	public double getExpectedLoad()
	{
		return expectedLoad;
	}

	public boolean isTooSlender()
	{		
		double slendernessLimit = 50;
		if((this.getHeight()/this.getWidth()) <= slendernessLimit)
		{
			return false;
		} else {
			return true;
		}		
	}


	public boolean willBuckle()
	{
		double area = this.getWidth() * this.getWidth();
		double modusOfElasticity = 1700000;
		double bucklingRequirement = (0.3*modusOfElasticity*area) / 
				((this.getHeight()/this.getWidth())*(this.getHeight()/this.getWidth()));
		
		if((getExpectedLoad() <= bucklingRequirement))
		{
			return false;
		} else {
			return true;
		}		
	}
	
	public boolean willCompress()
	{
		double maximumStress = 1450;
		double area = this.getWidth() * this.getWidth();

		if(getExpectedLoad() <= (area * maximumStress))
		{
			return false;
		} else {
			return true;
		}
	}
	
	public boolean isSafe()
	{
		if(isTooSlender() || willBuckle() || willCompress())
		{
			return false;
		} else {
			return true;
		}
	}
	
	public boolean equals()
	{
		if(this.height == getHeight() && this.width == getWidth() && this.expectedLoad == getExpectedLoad())
		{
			return true;
		} else {
			return false;
		}
	}
	
	public String toString()
	{
		return "(" + (this.getHeight()) + ", " + this.getWidth() + ", " + this.getExpectedLoad() + ")";

	}
	
	public static int numInstances(int count)
	{
		count++;
		return count;
	}

	public static WoodenColumn minStandardColumn(double height, double expectedLoad) 
	{
		double nominalWidth = 0.625;
		WoodenColumn newColumn = new WoodenColumn(height, nominalWidth, expectedLoad);
		while(!newColumn.isSafe())
		{
			nominalWidth++;
		}
		return newColumn;	
	}
	
}