CSC-220 HW3 Two Dimensional Array Problem Get Data From Internet

StarDataProcessor2.java

/* 
 * Name: Prof. A.C. Silvestri
 * Date: 9/29/18
 * Course Number: CSC-220
 * Course Name: Data Structures and Algorithms
 * Problem Number: HW3
 * Email: silvestri@stcc.edu
 * Description: Two Dimensional Array Processing specified in this assignment:
 * http://cs.stcc.edu/csc-220-hw3-two-dimensional-array-problem-stcccsc220/
 * V2.0 Gets data fron internet
 */

import java.net.URL;
import java.util.Scanner;

public class StarDataProcessor2 {

	@SuppressWarnings("unused")
	private static void print(int x[][], int columnsize, int numPerLine) {
		System.out.printf("%" + columnsize + "d", x.length);
		System.out.printf("%" + columnsize + "d\n", x[0].length);
		for (int i = 0; i < x.length; i++) {
			for (int j = 0; j < x[i].length; j++) {
				System.out.printf("%" + columnsize + "d", x[i][j]);
			}
			System.out.println();
		}
	}

	private static void print(char[][] stars) {
		for (int i = 0; i < stars.length; i++) {
			for (int j = 0; j < stars[0].length; j++)
				System.out.print("+---");
			System.out.println("+");
			for (int j = 0; j < stars[0].length; j++)
				System.out.print("| " + stars[i][j] + " ");
			System.out.println("|");
		}
		for (int j = 0; j < stars[0].length; j++)
			System.out.print("+---");
		System.out.println("+");
	}

	private static int sumOfNeighbors(int[][] starData, int row, int col) {
		int sum = 0;
		for (int i = -1; i <= 1; i++)
			for (int j = -1; j <= 1; j++)
				sum += starData[row + i][col + j];
		return sum;
	}

	private static char[][] analyzeStarData(int[][] starData) {
		char stars[][] = new char[starData.length][starData[0].length];
		for (int i = 0; i < stars.length; i++)
			for (int j = 0; j < stars[0].length; j++)
				stars[i][j] = ' ';
		for (int i = 1; i < stars.length - 1; i++)
			for (int j = 1; j < stars[0].length - 1; j++)
				if (sumOfNeighbors(starData, i, j) / 5 > 6.0)
					stars[i][j] = '*';
		return stars;
	}

	private static int[][] readStarData(String filename) {
		Scanner sc = null;
		try {
			URL file = new URL(filename);
			sc = new Scanner(file.openStream());
			int row = sc.nextInt();
			int col = sc.nextInt();
			int data[][] = new int[row][col];
			for (int i = 0; i < data.length; i++)
				for (int j = 0; j < data[0].length; j++)
					data[i][j] = sc.nextInt();
			return data;
		} catch (Exception ex) {
			return null;
		} finally {
			try {
				sc.close();
			} catch (Exception ex) {
			}
		}
	}

	// **********************************************

	private static void process(Scanner sc, String args[]) {
		System.out.print("Enter URL of StarData: ");
		String filename = sc.nextLine();
		int starData[][] = readStarData(filename);
		if (starData != null) {
			char stars[][] = analyzeStarData(starData);
			print(stars);
			System.out.println();
		}
		else {
			System.out.println("Error getting Start Data from Internet.");
		}
	}

	// **********************************************

	private static boolean doThisAgain(Scanner sc, String prompt) {
		System.out.print(prompt);
		String doOver = sc.nextLine();
		return doOver.equalsIgnoreCase("Y");
	}

	// **********************************************

	public static void main(String args[]) {
		final String TITLE = "Star Data Processor V2.0";
		final String CONTINUE_PROMPT = "Do this again? [y/N] ";
		System.out.println("Welcome to " + TITLE);
		Scanner sc = new Scanner(System.in);
		do {
			process(sc, args);
		} while (doThisAgain(sc, CONTINUE_PROMPT));
		sc.close();
		System.out.println("Thank you for using " + TITLE);
	}

}