package homeWork11;

import java.util.Scanner;

public class Strings implements Arithmetic {
	private char ch[];

	public Strings(String st) {
		ch=st.toCharArray();
	}

	public Strings() {

	}

	private Strings(int size) {
		char ch[]=new char[size];
	}

	@Override
		public Arithmetic sum(Arithmetic a) throws NullPointerException {
		try {
		Strings m=(Strings)a;
		Strings result = new Strings(ch.length + m.ch.length);
			for (int i = 0; i < ch.length; i++) {
					result.ch[i]=ch[i];
				}
			for (int i = 0; i < m.ch.length; i++) {
				result.ch[i+ch.length] = m.ch[i];
			}
			System.out.println(result.ch);
				return result;
		} catch (NullPointerException e) {
			throw e;
		}
			}


	@Override
	public boolean equals(Arithmetic a) {

		return false;
	}

	public void createString() {
		Scanner sc = new Scanner(System.in);
		System.out.print("Введите строчку: ");
		ch = sc.nextLine().toCharArray();
	}

	public void printOneSymbol(int number) {
		System.out.println(ch[number]);
	}

}