13-1_Sum.java

package lesson13;

/*_à Ïîñ÷èòàòü ñóììó äâóõ ÷èñåë è çàïèñàòü â òðåòüå
 Èñïîëüçîâàòü Generic, ââîä ÷èñåë ñ êîíñîëè, îáðàáîòêó try-catch
 ×èñëà äîëæíû áûòü îáúåêòàìè
*/

import java.util.Scanner;

//_à Èñïîëüçóåì Generic äëÿ êëàññà
public class Sum <T> {

	private static Scanner readNumber;
	
	//_à Äàííûå, êîòîðûå ââîäèò ïîëüçîâàòåëü ñ êîíñîëè
	private static String firstNumber, secondNumber;
	
	//_à ïåðåìåííûå ëþáîãî òèïà
	private T value1, value2;
	
	//_à Ãåòòåð ïåðâîãî ÷èñëà (èëè íå ÷èñëà)
	public T getValue1() {
		return value1;
	}
	
	//_à Ãåòòåð âòîðîãî ÷èñëà (èëè íå ÷èñëà)
	public T getValue2() {
		return value2;
	}
	
	//_à Ñåòòåð äëÿ ïðèñâîåíèÿ ââåäåííûõ äàíûõ ïåðåìåííûì value1 è value2
	public void setValue(T val1, T val2) {
		value1 = val1;
		value2 = val2;
		
		
	}
	
	public static void main(String[] args) {
		
		readNumber = new Scanner(System.in);
		
		System.out.print("Ââåäèòå Ïåðâîå ÷èñëî : ");
		firstNumber = readNumber.nextLine();
		
		System.out.print("Ââåäèòå Âòîðîå ÷èñëî : ");
		secondNumber = readNumber.nextLine();
		
		//_à Ýêçåìïëÿð êëàññà Sum òèïà Double 
		Sum <Double> doubleInstance = new Sum();
					
				
		try {
			
			//_à Åñëè ââåäåííîå ñ êîíñîëè - ÷èñëà
			//_à ïåðåâîäèì èõ â òèï Double
			doubleInstance.setValue(Double.parseDouble(firstNumber), Double.parseDouble(secondNumber));
			
			//System.out.println(doubleInstance.getValue1());
			//System.out.println(doubleInstance.getValue2());
						
			System.out.println("Ñóììà ÷èñåë = " + (double)(doubleInstance.getValue1()+doubleInstance.getValue2()));
		
		} catch (Exception e) {
			System.out.print("Îäèí èëè äâà ýëåìåíòà íå ÿâëÿþòñÿ ÷èñëàìè! - ");
			System.out.println(firstNumber + " " + secondNumber);
			System.out.println("Ñóììó íàéòè íåâîçìîæíî.");
		}
		

	}

}