Lesons1Exapmle2OOP

ActionWithTheTriangle

package com.gmail.kudr641.example2;

import java.util.Scanner;

public class ActionWithTheTriangle {

	public void printResult(Triangle[] arrayTriangle){
		for(int i = 0; i < arrayTriangle.length; i += 1){
			if(arrayTriangle[i].getSideOne() + arrayTriangle[i].getSideTwo() <= arrayTriangle[i].getSideThree() || 
					arrayTriangle[i].getSideOne() + arrayTriangle[i].getSideThree() <= arrayTriangle[i].getSideTwo() ||
					arrayTriangle[i].getSideTwo() + arrayTriangle[i].getSideThree() <= arrayTriangle[i].getSideOne()){
				System.out.println((i + 1) + " Not triangle " + arrayTriangle[i]);
			}else{
				arrayTriangle[i].setArea(resultArea(arrayTriangle[i]));
				System.out.println("Triangle " + (i + 1) + arrayTriangle[i]);
			}
		}
	}
		
	public Triangle[] createArrayTriangle(){
		Scanner scanner = new Scanner(System.in);
		
		System.out.println("How many triangles do you need?");
		int how = scanner.nextInt();
		
		Triangle[] arrayTriangle = new Triangle[how];
		for(int i = 0; i < arrayTriangle.length; i += 1){
			System.out.println("Input parameters " + (i + 1) + " triangle:");
			
			System.out.print("Input first side:");
			int one = scanner.nextInt();
			
			System.out.print("Input second side:");
			int two = scanner.nextInt();
			
			System.out.print("Input three side:");
			int three = scanner.nextInt();
			
			arrayTriangle[i] = new Triangle(one, two, three);
		}		
		return arrayTriangle;
	}
	
	private double resultArea(Triangle triangle) {
		double semiperimeter = (triangle.getSideOne() + triangle.getSideTwo()
		+ triangle.getSideThree()) / 2;
		double area = Math.sqrt(semiperimeter * 
				(semiperimeter - triangle.getSideOne()) 
				* (semiperimeter - triangle.getSideTwo())
				* (semiperimeter - triangle.getSideThree()));
		return area;
	}	

}

Runner

package com.gmail.kudr641.example2;

public class Runner {

	public static void main(String[] args) {
		ActionWithTheTriangle awtt = new ActionWithTheTriangle();
		Triangle[] arrayTriangle = awtt.createArrayTriangle();
		awtt.printResult(arrayTriangle);
	}
		
		
}

Triangle

package com.gmail.kudr641.example2;

public class Triangle {
	
	private int sideOne;
	private int sideTwo;
	private int sideThree;
	private double area;	

	public Triangle(int sideOne, int sideTwo, int sideThree) {
		this.sideOne = sideOne;
		this.sideTwo = sideTwo;
		this.sideThree = sideThree;			
	}

	@Override
	public String toString() {
		return "[sideOne=" + sideOne +
				", sideTwo=" + sideTwo +
				", sideThree=" + sideThree +
				", area=" + area + "]";
	}

	public double getArea() {
		return area;
	}

	public void setArea(double area) {
		this.area = area;
	}

	public int getSideOne() {
		return sideOne;
	}

	public int getSideTwo() {
		return sideTwo;
	}

	public int getSideThree() {
		return sideThree;
	}
		
}