Would like help with treeset ,the codes that using for sorting, please ?

Question

hi every body. i faced a problem while writing this program, everything worked properly except this one. The program is related to Jframe and it asks the user to add three labels , three text field , one text area and three Jbuttons which are add sort and exit. i could deal with add and exit but sort, i couldn't do it properly because i don't know the codes that should be added in actionperfomed?
These codes are :
package gui;
import javax.swing.SwingUtilities;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Rectangle;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JTextArea;
import sun.misc.Sort;
import domain.Student;
public class StudentFrame extends JFrame {
      * This method initializes btnAdd     
      * @return javax.swing.JButton     
     private JButton getBtnAdd() {
          if (btnAdd == null) {
               btnAdd = new JButton();
               btnAdd.setBounds(new Rectangle(13, 135, 59, 27));
               btnAdd.setText("Add");
               btnAdd.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(java.awt.event.ActionEvent e) {
                    btnAddClicked(); // TODO Auto-generated Event stub actionPerformed()
          return btnAdd;
     protected void btnAddClicked() {
          // TODO Auto-generated method stub
     String name = txtName.getText();
     String id = txtID.getText();
     String age = txtAge.getText();
     Student s = new Student(name , id , age);
     txtArea.setText(String.valueOf(s ));
      * This method initializes btnSort     
      * @return javax.swing.JButton     
     private JButton getBtnSort() {
          if (btnSort == null) {
               btnSort = new JButton();
               btnSort.setBounds(new Rectangle(95, 136, 62, 25));
               btnSort.setText("Sort");
               btnSort.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(java.awt.event.ActionEvent e) {
                         btnSortClicked(); // TODO Auto-generated Event stub actionPerformed()
          return btnSort;
     protected void btnSortClicked() {
          // TODO Auto-generated method stub
      * This method initializes btnExit     
      * @return javax.swing.JButton     
     private JButton getBtnExit() {
          if (btnExit == null) {
               btnExit = new JButton();
               btnExit.setBounds(new Rectangle(173, 134, 61, 23));
               btnExit.setText("Exit");
               btnExit.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(java.awt.event.ActionEvent e) {
                         System.exit(0); // TODO Auto-generated Event stub actionPerformed()
          return btnExit;
      * This method initializes txtName     
      * @return javax.swing.JTextField     
     private JTextField getTxtName() {
          if (txtName == null) {
               txtName = new JTextField();
               txtName.setBounds(new Rectangle(79, 11, 60, 23));
          return txtName;
      * This method initializes txtID     
      * @return javax.swing.JTextField     
     private JTextField getTxtID() {
          if (txtID == null) {
               txtID = new JTextField();
               txtID.setBounds(new Rectangle(73, 55, 65, 26));
          return txtID;
      * This method initializes txtAge     
      * @return javax.swing.JTextField     
     private JTextField getTxtAge() {
          if (txtAge == null) {
               txtAge = new JTextField();
               txtAge.setBounds(new Rectangle(74, 96, 61, 24));
          return txtAge;
      * This method initializes txtArea     
      * @return javax.swing.JTextArea     
     private JTextArea getTxtArea() {
          if (txtArea == null) {
               txtArea = new JTextArea();
               txtArea.setBounds(new Rectangle(138, 5, 154, 128));
          return txtArea;
      * @param args
     public static void main(String[] args) {
          // TODO Auto-generated method stub
          SwingUtilities.invokeLater(new Runnable() {
               public void run() {
                    StudentFrame thisClass = new StudentFrame();
                    thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    thisClass.setVisible(true);
      * This is the default constructor
     public StudentFrame() {
          super();
          initialize();
      * This method initializes this
      * @return void
     private void initialize() {
          this.setSize(300, 200);
          this.setContentPane(getJContentPane());
          this.setTitle("JFrame");
          return jContentPane;
}Edited by: hypocrisy on Apr 26, 2009 6:51 PM

Answer 1

There are three actionPerformed in that program.One for add Jbutton , Sort , and Exit
the codes that i have added for add button after action performed are
String name = txtName.getText();
String id = txtID.getText();
String age = txtAge.getText();
Student s = new Student ( name , id , age);
System.out.println(s);
the codes for Exit button to make it works properly was :
System.out.println(0);
But when i came to Sort Button and i tried to enter many codes but it didn't sort properly so would you like to help me with the right codes :)