OOP_HomeWork1b

Main

package maricka.kolokolova;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Triangle triangleOne = new Triangle(6.0, 8.0, 10.0);
		System.out.println(triangleOne.areaTriangle());

		Triangle triangleTwo = new Triangle();
		triangleTwo.setA(3.1);
		triangleTwo.setB(8.0);
		triangleTwo.setC(9.5);
		System.out.println(triangleTwo);
	}

}

Triangle

package maricka.kolokolova;

public class Triangle {
	private double a;
	private double b;
	private double c;
	private double area;

	public Triangle() {
		super();
		// TODO Auto-generated constructor stub
	}

	public Triangle(double a, double b, double c) {
		super();
		this.a = a;
		this.b = b;
		this.c = c;
	}

	public double getA() {
		return a;
	}

	public void setA(double a) {
		this.a = a;
	}

	public double getB() {
		return b;
	}

	public void setB(double b) {
		this.b = b;
	}

	public double getC() {
		return c;
	}

	public void setC(double c) {
		this.c = c;
	}

	double areaTriangle() {
		if ((a < b + c) && (b < a + c) && (c < a + b)) {
			double p = (a + b + c) / 2;
			return Math.sqrt(p * (p - a) * (p - b) * (p - c));
		} else {
			return 0;
		}

	}

	@Override
	public String toString() {
		if ((a < b + c) && (b < a + c) && (c < a + b)) {
			area = areaTriangle();
			return "Triangle [a=" + a + ", b=" + b + ", c=" + c + ", area=" + area + "]";
		} else {
			return "Triangle does not exist!";
		}
	}

}