Why following sort does not work It does not sort last 2 3

Why following sort does not work? (It does not sort last 2 - 3 numbers)

//Sort order
class SortNumbListener implements ActionListener
{
@Override
public void actionPerformed(ActionEvent e)
{
Collections.sort(list);
for(int i = 0; i < list.size(); i++)
{
textfield2.setText(list.toString());
}
System.out.print(list + \"\ \");
}
}

Solution

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import javax.swing.JTextField;

public class SorAction {

   public JTextField textfield2;
   public List<Integer> list;

   public SorAction() {
       // TODO Auto-generated constructor stub
       textfield2 = new JTextField();
       list = new ArrayList<Integer>();
       list.add(20);
       list.add(12);
       list.add(32);
       list.add(3);
       new SortNumbListener().actionPerformed(new ActionEvent(\"\", 0, null));
   }

   public static void main(String[] args) {
       try {
           new SorAction();
       } catch (Exception e) {
           // TODO: handle exception
           e.printStackTrace();
       }

   }

   class SortNumbListener implements ActionListener {
       @Override
       public void actionPerformed(ActionEvent e) {
           Collections.sort(list);

           textfield2.setText(list.toString());

           System.out.print(list + \"\ \");
       }
   }
}

OUTPUT:

[3, 12, 20, 32]

NOTE: please check the above example, sorting fine, but what is the need of loop,

if you want to add the text to textbox use setText() method of textfield