package lab6;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Random;
import java.util.Scanner;

public class Zad4 {

	static Random rand = new Random();
	static Scanner scanner = null;
	static PrintWriter writer = null;
	static int[][] arr = new int[10][10];
	static int[][] arr2 = new int[10][10];

	static void initialize() {
		for (int i = 0; i < arr.length; i++) {
			for (int j = 0; j < arr.length; j++) {
				arr[i][j] = rand.nextInt(99);
			}
		}
	}

	static void show(int[][] a) {
		for (int i = 0; i < a.length; i++) {
			for (int j = 0; j < a.length; j++) {
				System.out.printf("%2d  ", a[i][j]);
			}
			System.out.printf("\n");
		}
		System.out.printf("\n");
	}

	static void write() {
		try {
			writer = new PrintWriter("data.csv", "UTF-8");
			for (int i = 0; i < arr.length; i++) {
				for (int j = 0; j < arr.length; j++) {
					writer.printf("%d ", arr[i][j]);
				}
				writer.printf("\n");
			}

		} catch (FileNotFoundException e) {
			System.out.printf("File not found!\n");
		} catch (UnsupportedEncodingException e) {
			System.out.printf("Unsupported encoding!\n");
		} finally {
			if (writer != null) {
				writer.close();
			} else {
				System.out.println("PrintWriter not open");
			}
		}
	}

	static void open() {
		Path filePath = Paths.get("data.csv");
		try {
			scanner = new Scanner(filePath);
			int a = 0;

			for (int i = 0; i < arr2.length; i++) {
				for (int j = 0; j < arr2.length; j++) {
					if (scanner.hasNextInt()) {
						a = scanner.nextInt();
						arr2[i][j] = a;
					}
				}
			}
		} catch (IOException e) {
			System.out.println("IOException!!!!!!!!");
		}

	}

	public static void main(String[] args) {
		initialize();
		show(arr);
		write();
		open();
		show(arr2);
	}

}