title: Read a text file and assign values to variables
body: <p>Java beginner here but I am sincerely trying. The goal of this program is to read two values from the Realtor11.txt file and assign them to variables. </p>
  
  <p>The contents of Realtor11.txt is (no spaces):</p>
  
  <p>John</p>
  
  <p>100</p>
  
  <p>See section // Read Realtor11.txt Not sure what I'm doing wrong but currently the error is</p>
  
  <p>Realtor11.java:48: error: incompatible types
              price = in.readLine();
                                 ^
    required: double
    found:    String
  1 error
  Error: Could not find or load main class Realtor11
  [Finished in 1.1s]</p>
  
  <pre><code>// java class for keyboard I/O
  import java.util.Scanner;
  // java class for JOption GUI
  import javax.swing.JOptionPane;
  // File reader
  import java.io.BufferedReader;
  import java.io.FileReader;
  import java.io.IOException;
  import java.io.InputStream;
  
  public class Realtor11
  {
      public static void main(String[] args)
      {
      // Keyboard and file input
          Scanner console = new Scanner(System.in); 
          Scanner inputStream = null;
      // price of the house, the cost to sell the house and the commission
          double price, cost, commission;
      // seller’s name
          String seller; 
  
      // GUI diplay message declaration
          String display_message = "This program calculates the cost to sell a home\n" 
          + "and the commission paid to an individual sales agent.\n\n"
          + "The user is asked for the last name of the seller and the\n"
          + "sales price.\n\n";
  
      // Output descriptive messages
          JOptionPane.showMessageDialog(null, display_message, "Lab 1 Description", JOptionPane.INFORMATION_MESSAGE);
  
      // Read Realtor11.txt
          try {
              BufferedReader in = new BufferedReader(new FileReader("Realtor11.txt"));
              while (in.read()!= -1);
              seller = in.readLine();
              price = in.readLine();
              in.close();
              } 
              catch (IOException e) {}
  
      // calculate the cost and the commission
          cost = 0.06 * price;
          commission = 0.015 * price;
      // display the input and results
          String 
              out1 = String.format("%nThe " + seller + "’s" + " home sold for $%.2f%n", price),
              out2 = String.format("The cost to sell the home was $%.2f%n", cost),
              out3 = String.format("The selling or listing agent earned $%.2f%n", commission);
  
          JOptionPane.showMessageDialog(null, out1 + out2 + out3, seller + "'s Home Sale", JOptionPane.INFORMATION_MESSAGE);
  
      // Output to file
      // still writing this. 
  
      }
  }
  </code></pre>