12 days of xmas??? not showing

i wrote this but my song isnt showing up.
Code java:
import javax.swing.*;
 
public class Assign5 {
 
   public static void main( String args[] )
   {
      String result = "";
      JTextArea songArea = new JTextArea(20, 30);
      JScrollPane scroller = new JScrollPane(songArea);
      String songString = "";
 
      for ( int day = 1; day <= 12; day++ ) {
          result += "\nOn the " + day;
 
          switch( day ) {
             case 1:
                result += "st";
                break;            
             case 2:
                result += "nd";
                break;  
             case 3:
                result += "rd";
                break;  
             default: 
                result += "th";
                break;
          }
          result += " day of Christmas, my true love gave to me: ";
 
          switch( day ) {
             case 12:
                result += "   Twelve lords-a-leaping, ";
             case 11:
                result += "   Eleven pipers piping, ";
             case 10:
                result += "   Ten drummers drumming, ";
             case 9:
                result += "   Nine ladies dancing, ";
             case 8:
                result += "   Eight maids-a-milking, ";
             case 7:
                result += "   Seven swans-a-swimming, ";
             case 6:
                result += "   Six geese-a-laying, ";
             case 5:
                result += "   Five golden rings.";
             case 4:
                result += "   Four calling birds, ";
             case 3:
                result += "   Three French hens, ";
             case 2:
                result += "   Two turtle doves, and ";
             case 1:
                result += "   a Partridge in pear tree.";          
          }
      }
 
      songArea.setText(songString);
      JOptionPane.showMessageDialog(null, scroller, "Twelve Days of Christmas", 
    		    JOptionPane.PLAIN_MESSAGE);
      System.exit( 0 );
   }
}