Sorting String of data stored in an Arraylist using insertionSort.

How to use an insertionSort to sort the data according to dueDate stored in book.txt file & print the data out on the screen?
I can't sort the String of data stored in an Arraylist. What do I need to do? TIA.

--------------------BookApp.java----------------------
import java.io.*;
import java.util.*;

public class BookApp {

public static void main (String args[]){

FileController f = new FileController ("book.txt");

ArrayList recsReturn = new ArrayList();
         
recsReturn = f.readRequest(); // invoke the readRequest methods in FileController to read recoreds from book.txt file. & stores the records in recsResturn
.....
....
System.out.println(......................);
  }
}
-----------------------------------------------------------------
Content of my book.txt:
Title 1;Author 1;false;null;28/06/2003;21/06/2003      
Title 2;Author 2;false;null;28/06/2003;28/07/2003    
Title 3;Author 3;false;null;28/06/2003;10/07/2003
Title 4;Author 4;false;null;28/06/2003;08/06/2003

Output after sorting is to looks like:
Title 4  08/06/2003
Title 1  21/06/2003    
Title 3  10/07/2003
Title 2  28/07/2003

-------------------FileController.java--------------------
import java.io.*;
import java.util.*;

public class FileController {
   private String file;
     
public FileController(String file){
   this.file = file;
}
public ArrayList readRequest(){
   String line = null;
   ArrayList records = new ArrayList();
     
try{
   FileReader fr = new FileReader (file);
   BufferedReader inFile = new BufferedReader (fr);
   line = inFile.readLine();
   while (line!=null){
       records.add(line);
       line = inFile.readLine();
}
   inFile.close();
}
   catch (FileNotFoundException exception){
         System.out.println ("The file " + file + " was not found.");
}
   catch (IOException exception){
         System.out.println (exception);
}
    return records;
 }
}
---------------------Book.java ----------------------------
import java.io.*;
import java.util.*;
public class Book implements Comparable {
   private String title;
   private String author;
   private boolean loanStatus;
   private String borrowerId;
   private GregorianCalendar loanDate;
   private GregorianCalendar dueDate;

public Book(String title, String author){
   this.title = title;
   this.author = author;
   loanStatus = false;
}

// Overload constructor to take in a String
public Book (String record){
   String title;
   String author;
   boolean loanStatus;
   String borrowerId;
   GregorianCalendar loanDate = null;
   GregorianCalendar dueDate = null;
   String status;
   StringTokenizer tokenizer;
   Book bk=null;

   tokenizer = new StringTokenizer (record, ";");
   title = tokenizer.nextToken();
   author = tokenizer.nextToken();
   status = tokenizer.nextToken();
   loanStatus = Boolean.valueOf(status).booleanValue();
   borrowerId = tokenizer.nextToken();
   loanDate = MyCalendar.convertDate(tokenizer.nextToken());
   dueDate = MyCalendar.convertDate(tokenizer.nextToken());
                   
   this.title = title;
   this.author = author;
   this.loanStatus = loanStatus;
   this.borrowerId = borrowerId;
   this.loanDate = loanDate;
   this.dueDate = dueDate;
}
//  Accessor methods to get attributes of the book.
public String getTitle(){
   return title;
}
public String getAuthor(){
   return author;
}
public boolean getLoanStatus(){
   return loanStatus;
}
public String getBorrowerId(){
   return borrowerId;
}
public GregorianCalendar getLoanDate(){
   return loanDate;
}
public GregorianCalendar getDueDate(){
   return dueDate;
}

// Accessor methods to update attributes of the book.

public void setTitle(String title){
   this.title = title;
}
public void setAuthor(String author){
   this.author = author;
}
public void setLoanStatus(boolean status){
   loanStatus = status;
}
public void setBorrowerId(String id){
   borrowerId = id;
}
public void setLoanDate(GregorianCalendar loan){
   loanDate = loan;
}
public void setDueDate(GregorianCalendar due){
   dueDate = due;
}
// Returns information about this book object as a string.

public String toString(){
   return title + ";" + author + ";" + loanStatus + ";" + borrowerId + ";" + MyCalendar.formatDate(loanDate) + ";" + MyCalendar.formatDate(dueDate);
 }

public int compareTo(Object x){
   Book bk = (Book)x;
   int result;
   
   if(dueDate.before(bk.getDueDate()))
   result =-1;
   else if (dueDate.after(bk.getDueDate()))
      result =1;
   else
      result =0;
return result;
  }
}

-------------------MyCalendar.java------------------------------
import java.util.*;
import java.text.DecimalFormat;

public class MyCalendar {

//Get the number of days for first date minus second date
public static long getDifference (GregorianCalendar d1, GregorianCalendar d2){
   long firstDate = d1.getTimeInMillis();
   long secDate = d2.getTimeInMillis();
   return (firstDate - secDate)/(24*60*60*1000);
}
public static String formatDate (GregorianCalendar d1){
   DecimalFormat fmt = new DecimalFormat ("00");
   int day = d1.get(Calendar.DATE);
   int month = d1.get(Calendar.MONTH)+ 1 ;
   int year = d1.get(Calendar.YEAR);
   return fmt.format(day) + "/" + fmt.format(month) + "/" + year;
}

public static GregorianCalendar convertDate (String date){
   int day, month, year;
   day = Integer.parseInt(date.substring(0,2));
   month = Integer.parseInt(date.substring(3,5));
   year = Integer.parseInt(date.substring(6,10));
   return new GregorianCalendar(year, month-1, day);
}
public static void main (String args[]){
   GregorianCalendar d1 = new GregorianCalendar(2003, 1, 20);
   GregorianCalendar d2 = new GregorianCalendar(2003, 0, 16);

   System.out.println("First Date = " +  MyCalendar.formatDate(d1));
   System.out.println("Second Date = " + MyCalendar.formatDate(d2));
   long days = MyCalendar.getDifference(d1, d2);
   System.out.println("Difference in Days = " + days);
         
   GregorianCalendar d3 = MyCalendar.convertDate("02/03/2009");
   System.out.println("Third Date = " + MyCalendar.formatDate(d3));
 }
}
-------------------Sort.java-------------------------------
public class Sort{

public static void insertionSort (Comparable[] object)
   {
   for (int index = 1; index < object.length; index++)
    {
     Comparable key = object[index];
     int position = index;
// shift larger values to the right
     while (position > 0 && object[position-1].compareTo(key) > 0)
      {
       object[position] = object[position-1];
       position--;
      }
     object[position]= key;
    }
  }    
}