areaCalculation

public class DoThing {
	int area;
	int surfacearea;
	int length;
	int width;
	int height;
	
	public DoThing(int length1, int width1, int height1) {
		System.out.println("We have a " + length1 + " by " + width1 + " by " + height1 + " prism");
		length = length1;
		width = width1;
		height = height1;
	}
	
	public void calculateArea() {
		area = length * width * height;
	}
	
	public void calculateSurfaceArea() {
	    surfacearea = 2*(length * width) + 2*(length * height) + 2*(height * width);
	}
	
	public int returnSurfaceArea(){
	    System.out.println("The surface area is: " + surfacearea);
	    return surfacearea;
	}
	
	public int returnArea() {
		System.out.println("The area of the " + length +  " by " + width + " by " + height + " prism is " + area);
		return area;
	}
	
	public static void main(String[] args) {
		DoThing calculations = new DoThing(684,792,784);
		calculations.calculateArea();
		calculations.returnArea();
		calculations.calculateSurfaceArea();
		calculations.returnSurfaceArea();
	}
}