Incompatible types error on a for loop

Question

Hi. I am in the middle of making a program and a decided to make a print statment to check to make sure everything was organized as it should be and I got an incompatible types error for the line where I start my for loop - for (index = 0 ...) etc. Since everything is an int, I'm not sure how they're not compatible with each other.. thoughts? here's my code so far, thanks
import java.io.*; // needed for stream readers
import java.lang.*;
public class testScores extends Object
     public static void main(String args[] ) throws Exception
     // declare variables for input
String      records;
String      room_nbr_input;
String      test_score_input;
String      student_id;
int          room_nbr_nbr;
int          test_score_nbr;
int          index;
String[] record = new String[3];
int[]     room_nbr = new int[30];
int[]      test_score = new int[30];
int[]     kount = new int[30];
     // created file reader and buffered reader
          FileReader frM;
          BufferedReader brM;
          // open file
          frM = new FileReader("einstein_testscores_2009.txt");
          brM = new BufferedReader(frM);
     // print headings
          startUp();
          // get one record from file
          records = brM.readLine();
          while(records !=null)
          //split the record into three fields = the array record[], then assign those values to variables
          record = records.split(", ");
          student_id = record[0];
          room_nbr_input = record[1];
          test_score_input = record[2];
          //change the data into integers
          room_nbr_nbr = Integer.parseInt(room_nbr_input);
          test_score_nbr = Integer.parseInt(test_score_input);
          //put the variables into arrays
          room_nbr[room_nbr_nbr -1] = room_nbr_nbr;
          test_score[room_nbr_nbr -1] = test_score[room_nbr_nbr -1] + test_score_nbr;
          //get new record
          records = brM.readLine();
          for (index = 0; index = room_nbr.length; index++)
               System.out.print(room_nbr[index] + "\t\t" + test_score[index]);
     public static void startUp()
     System.out.print("Einstein Elementary Test Scores\n\n");
     System.out.print("Room Number\t\tTest Score Average\n\n");
}          // end of class declaration

Answer 1

thank you. here's the code.
import java.io.*;       // needed for stream readers
import java.lang.*;   
public class testScores extends Object
     public static void main(String args[] ) throws Exception
     // declare variables for input
        String      records;
        String      room_nbr_input;
        String      test_score_input;
        String      student_id;
        int             room_nbr_nbr;
        int             test_score_nbr;
        int          index;
        String[] record = new String[3];
        int[]      room_nbr = new int[30];
        int[]       test_score = new int[30];
        int[]      kount = new int[30];
          // created file reader and buffered reader
          FileReader frM;
          BufferedReader brM;
          // open file
          frM = new FileReader("einstein_testscores_2009.txt");
          brM = new BufferedReader(frM);
     // print headings
          startUp();
          // get one record from file
          records = brM.readLine();
          while(records !=null)
          //split the record into three fields = the array record[], then assign those values to variables
          record = records.split(", ");
          student_id = record[0];
          room_nbr_input = record[1];
          test_score_input = record[2];
          //change the data into integers
          room_nbr_nbr = Integer.parseInt(room_nbr_input);
          test_score_nbr = Integer.parseInt(test_score_input);
          //put the variables into arrays
          room_nbr[room_nbr_nbr -1] = room_nbr_nbr;
          test_score[room_nbr_nbr -1] = test_score[room_nbr_nbr -1] + test_score_nbr;
          //get new record
          records = brM.readLine();
           for (index = 0; index = room_nbr.length; index++)
                System.out.print(room_nbr[index] + "\t\t" + test_score[index]);
     public static void startUp()
     System.out.print("Einstein Elementary Test Scores\n\n");
     System.out.print("Room Number\t\tTest Score Average\n\n");
}          // end of class declaration