Magic Square Program - File Not Found Exception Error
Apr 25, 2014
I am working on a magic square program. My program compiles. However, when I enter the square dimension it does not select the correct file. The error says "java.io.FileNotFoundException." It looks like it inserts 0 instead of the entered dimension.
import java.util.*;
import java.io.*;
public class Trial2
{
public static int size, row, col;
public static void main(String[]args)throws java.io.IOException
I'm having a small issue with my output on my code. here is what my output is: The magic value for your square is 34, which means that every row, column and diagonal of your square must add up to that number.
Please enter the 4 values for row 0, separated by spaces: 1 2 15 16 Please enter the 4 values for row 1, separated by spaces: 13 14 3 4 Please enter the 4 values for row 2, separated by spaces: 12 7 10 5 Please enter the 4 values for row 3, separated by spaces: 8 11 6 9 Checking square for problems: DIAG: VALID ROWS: VALID COLS: VALID RANG: VALID MAGIC: No
MAGIC should be YES. However i keep getting it saying no.This is the correct output..The magic value for your square is 34, which means that every row, column and diagonal of your square must add up to that number.
Please enter the 4 values for row 0, separated by spaces: 1 2 15 16 Please enter the 4 values for row 1, separated by spaces: 13 14 3 4 Please enter the 4 values for row 2, separated by spaces: 12 7 10 5 Please enter the 4 values for row 3, separated by spaces: 8 11 6 9
import java.util.Scanner; public class pdonahue_Magic { public static void main(String args[]) { int[][] theSquare = new int[4][4]; Scanner s = new Scanner(System.in); System.out.println.
("The magic value for your square is 34, which means that every row, column and diagonal of your square must add up to that number.");
System.out.print("Please enter the 4 values for row 0, separated by spaces: "); theSquare[0][0] = s.nextInt(); theSquare[1][0] = s.nextInt(); theSquare[2][0] = s.nextInt(); theSquare[3][0] = s.nextInt();
When taking in these numbers from the user, I am not allowed to let the user state what size the matrix is (e.g.;3 x 3). Instead the program needs to determine that itself. I have written the code below to count the number of numbers inputted, but now I am stuck as to how to get them into the array. I have what is suppose to be my array written, but it is not function yet.
import java.util.*; public class MagicSquare { public static void main(String[] args) { Scanner input = new Scanner(System.in);
I'm trying to have the program create a .txt file for me but it is not working properly. It just keeps printing the exception error "The file could not be found" and exits the program.
// This program asks the user for input for a name, phone number and notes up to 200 entries. // It stores every contact in a file. Type 'h' for help while running this program.
import java.util.Scanner; import java.io.*; public class Phonebook { static Entry[] entryList = new Entry[200]; static int numEntries; public static void main(String[] args) {
[Code] ....
After running the code, I go into my workspace folder and I see that the file was created. What to do because running the program will always print "could not find the file".
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at home.Members.addUser(Members.java:16) at home.Main.main(Main.java:14)"
Here is the code! :
Main.java class Java Code: import java.util.Scanner; public class Main {
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I'm getting
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public class StockTrackerDB { private Connection con = null;
// Constructor: makes database connection public StockTrackerDB() throws ClassNotFoundException,SQLException
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run:
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BufferedWriter pwfo = null; for (int i = 0; i < args.length; i++) { String string = args[i]; pwfo = null;
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As a visual explanation, this is what the program looks like on launch:
This is what it's suppose to look like after you press the right arrow key once (made by forcibly changing launch coordinates):
And this is what it actually looks like after you press the right arrow key once:
Here is the code for the program:
package cursortest; import javax.swing.*; import java.awt.*; import javax.imageio.*; import java.io.*; import java.awt.event.*; public class CursorTest extends JPanel implements KeyListener{
[Code] ......
I'm fully aware that I could just use g.clearRect on the area and remove it for sure, but I know for a fact I shouldn't have to as I have another program I made a long time ago that tried to do something similar without needing to resort to that.
