Strange Compiler Error

Question

Hi, I was wondering if you could help me out with a little problem that I've encountred. When I compile my project, I get the following errors:
Errors:
C:\Program Files\Xinox Software\JCreatorV3 LE\MyProjects\MatrixAddition\MatrixAddition.java:23: illegal start of type
        while(exit == false) {
        ^
C:\Program Files\Xinox Software\JCreatorV3 LE\MyProjects\MatrixAddition\MatrixAddition.java:120: <identifier> expected
^
2 errorsRadReader class:
import java.io.*;
import java.lang.*;
// Use to throw exceptions
class RadReaderException extends RuntimeException { 
     RadReaderException(Throwable cause) {   
          super(cause); 
public class RadReader {       
     public static int readInt(String prompt) {          
     BufferedReader bfRdr = new BufferedReader(new InputStreamReader(System.in));
          // Print the prompt
          if(prompt != "") {
               System.out.print(prompt);
          // Get string input
          int integer = 0;
          String input = "";
          try {
               input = bfRdr.readLine();
          catch(IOException e) {
               throw new RadReaderException(e);
          // Convert to int
          try {
               integer = Integer.parseInt(input);
          catch(NumberFormatException e) {
               throw new RadReaderException(e);
          // Return integer
          return integer;
     public static float readFloat(String prompt) {          
     BufferedReader bfRdr = new BufferedReader(new InputStreamReader(System.in));
          // Print the prompt
          if(prompt != "") {
               System.out.print(prompt);
          // Get string input
          float floatingPt = 0;
          String input = "";
          try {
               input = bfRdr.readLine();
          catch(IOException e) {
               throw new RadReaderException(e);
          // Convert to float
          try {
               floatingPt = Float.parseFloat(input);
          catch(NumberFormatException e) {
               throw new RadReaderException(e);
          // Return floatingPt
          return floatingPt;
     public static double readDouble(String prompt) {          
     BufferedReader bfRdr = new BufferedReader(new InputStreamReader(System.in));
          // Print the prompt
          if(prompt != "") {
               System.out.print(prompt);
          // Get string input
          double dble = 0;
          String input = "";
          try {
               input = bfRdr.readLine();
          catch(IOException e) {
               throw new RadReaderException(e);
          // Convert to double
          try {
               dble = Double.parseDouble(input);
          catch(NumberFormatException e) {
               throw new RadReaderException(e);
          // Return dble
          return dble;
     public static char readChar(String prompt) {          
     BufferedReader bfRdr = new BufferedReader(new InputStreamReader(System.in));
          // Print the prompt
          if(prompt != "") {
               System.out.print(prompt);
          // Get char
          char character = '?';
          try {
               character = (char)bfRdr.read();
          catch(IOException e) {
               throw new RadReaderException(e);
          // Return true if method worked
          return character;
     public static char[] readCharArray(String prompt, int length) {
     BufferedReader bfRdr = new BufferedReader(new InputStreamReader(System.in));
          // Print the prompt
          if(prompt != "") {
               System.out.print(prompt);
          // Get char[]
          char[] array = new char[length];
          try {
               bfRdr.read(array, 0, array.length);
          catch(IOException e) {
               throw new RadReaderException(e);
          // Return true if method worked
          return array;
     public static String readString(String prompt) {        
     BufferedReader bfRdr = new BufferedReader(new InputStreamReader(System.in));     
          // Print the prompt
          if(prompt != "") {
               System.out.print(prompt);
          // Get string input
          String string = "";
          try {
               string = bfRdr.readLine();
          catch(IOException e) {
               throw new RadReaderException(e);     
          // Return true if method works
          return string;
}Main(Matrix Addition):
public class MatrixAddition {
     // Radreader object
     RadReader reader = new Radreader();
     // Instantiate arrays
     int[][] array1 = new int[3][2];
     int[][] array2 = new int[3][2];
     int[][] array3 = new int[3][2];
     // Boolean control variables
     boolean exit = false;
     // Begin while loop
     while(exit == false) {
          // Get user input
          for(int row = 0; row < array1.length; row++) {
               for(int column = 0; column < array1[0].length; column++) {
                    // local storage
                    int element = 0;
                    // Query for input
                    element = reader.readInt("Please enter the value of the " +
                                                   "element at row " + row + " and " +
                                                   "column " + column + ":");
                    // Set input to array1
                    array1[row][column] = element;
          // Get user input
          for(int row = 0; row < array2.length; row++) {
               for(int column = 0; column < array2[0].length; column++) {
                    // local storage
                    int element = 0;
                    // Query for input
                    element = reader.readInt("Please enter the value of the " +
                                                   "element at row " + row + " and " +
                                                   "column " + column + ":");
                    // Set input to array1
                    array2[row][column] = element;
          // Add arrays
          for(int row = 0; row < array3.length; row++) {
               for(int column = 0; column < array3[0].length; column++) {
                    // Set input to array1
                    array3[row][column] = array1[row][column] +array2[row][column];
          // Print arrays
          System.out.println("Array 1");
          for(int row = 0; row < array1.length; row++) {
               for(int column = 0; column < array1[0].length; column++) {
                    System.out.print(array1[row][column] + " ");
               System.out.println();
          System.out.println();
          System.out.println("Plus");
          System.out.println();
          System.out.println("Array 2");
          for(int row = 0; row < array2.length; row++) {
               for(int column = 0; column < array2[0].length; column++) {
                    System.out.print(array2[row][column] + " ");
               System.out.println();
          System.out.println();
          System.out.println("Equals");
          System.out.println();
          for(int row = 0; row < array3.length; row++) {
               for(int column = 0; column < array3[0].length; column++) {
                    System.out.print(array3[row][column] + " ");
               System.out.println();
          // Check for exit flag
          char exitFlag = reader.readChar("Quit?(y/n) ");
          if(exitFlag == 'y' || exitFlag == 'Y') {
               exit = true;
          System.out.println();          
}Please advize me on how to fix my code.
Thanks!

Answer 1

Nothing strange. You can only write a statement (such as a while-loop) inside a block. You can only write a block inside a method declaration or initializer.
Your problem is that you put the while-loop straight inside a class declaration. You should put it inside a method instead.