title: simple array table, unknown Error
body: <p>and im trying to create a simple array table in ecplise. 
  3 columns with 3 lines. 1st and 2nd columns are strings and 3rd column is doubles. i also want the user to have an option to rewrite the current line if he made a mistake. </p>
  
  <p>very simple right? i'm getting an error that i do not understand. can someone please explain it to me? here is the code:</p>
  
  <pre><code>import java.util.Scanner;
  
  public class exercise923 
  {
      public static void main(String args[]) 
      {
          int counter = 0, check; //these are numbers used for the loops
          String column1[] = new String[3]; //these are data for the table
          String column2[] = new String[3];
          double column3[] = new double[3];
          Scanner Scan = new Scanner(System.in);
  
          //this do while loop allows the user to enter data for the table
          do {
              System.out.println("type values for columns 1, 2, and 3 of line: " + counter);
              column1[counter] = Scan.nextLine();
              column2[counter] = Scan.nextLine();
              column3[counter] = Scan.nextDouble();
  
              //after typing out the data for this line, user can type 1 to go to the next line, or 2 to rewrite this line
              System.out.println("type 1 to continue, 2 to rewrite");
              check = Scan.nextInt();
              if (check==1) {
                  counter++;
              }
         } while (counter&lt;3);
  
          //once user is finished typing out all the data for the 3 lines
          //of 3 columns, the table gets printed out.
          counter=0;
          System.out.println("your finished table:");
  
          do {
              System.out.print(column1[counter] + "\t");
              System.out.print(column2[counter] + "\t");
              System.out.println(column3[counter]);
              counter++;
          } while (counter&lt;3);
      } // main   
  } // class
  </code></pre>
  
  <p>when i run this, i get:</p>
  
  <pre><code>type values for columns 1, 2, and 3 of line: 0
  jack
  bob
  3
  type 1 to continue, 2 to rewrite
  2
  type values for columns 1, 2, and 3 of line: 0
  dale
  sally
  Exception in thread "main" java.util.InputMismatchException
  at java.util.Scanner.throwFor(Unknown Source)
  at java.util.Scanner.next(Unknown Source)
  at java.util.Scanner.nextDouble(Unknown Source)
  at exercise923.main(exercise923.java:21)
  </code></pre>