StackOverflow - Q33467177 - MCVE by TheLima

Main.java

/*
USE NEGATIVE NUMBERS TO EXIT, IN ANY INPUT
 */
package Q_33467177;

import java.awt.Point;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;

/**
 *
 * @author TheLima <http://stackoverflow.com/users/1253136/thelima>;
 */
public class Main {

  /**
   * @param args the command line arguments
   */
  public static void main(String[] args) throws FileNotFoundException {
    boolean exit = false;
    Point[] A = new Point[100];
    Scanner in = new Scanner(System.in);

    while (!exit) {
      System.out.println("Enter index: ");
      int i = in.nextInt(); //validate
      if (i < 0) {
        exit = true;
        break;
      }
      System.out.print("Enter integers x, y to replace: ");
      int x = in.nextInt();
      if (x < 0) {
        exit = true;
        break;
      }
      int y = in.nextInt();
      if (y < 0) {
        exit = true;
        break;
      }
      A[i] = new Point(x, y);
    }

    PrintWriter p;
    try {
      p = new PrintWriter("Project.txt");

      for (Point k : A) {
        p.println(Arrays.deepToString(A));
      }
      p.close();
    } catch (FileNotFoundException ex) {
//      Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
      throw ex;
    }
  }
}