12 classes, only need 1 at a time, array?how? HELP!

Question

Below i have made up the months of the year but as you can see the gridlayout changes for each one which is why i made them up like so.
I want to make up an array to hold them and only call them when needed.
The problem is that if i do that my code will be to long, is their a way of croping them down as 12 methods plus extra decades :-(
I have thought of making up extra java files to hold each 12 months but i not sure how to call them in, I think i use import mar.*;
To be truthfull i'm a bit losed
public void mar(){
JPanel control2panel = new JPanel();
JPanel days =new JPanel();
days.setLayout(new GridLayout(6,7));
for(int x=0;x<5;x++){
JLabel blank = new JLabel("");
days.add(blank);
int i =1;
for(int x =0; x < 31; x++){
JButton nextButton = new JButton(String.valueOf(i));
nextButton.addActionListener(this);
days.add(nextButton);
++i;
for(int x=0;x<6;x++){
JLabel blank = new JLabel("");
days.add(blank);
control2panel.add(days);
getContentPane().add(control2panel,"Center");
pack();
public void apr(){
JPanel control2panel = new JPanel();
JPanel days =new JPanel();
days.setLayout(new GridLayout(5,7));
for(int x=0;x<1;x++){
JLabel blank = new JLabel("");
days.add(blank);
int i =1;
for (int x =0; x < 30; x++){
JButton nextButton = new JButton(String.valueOf(i));
nextButton.addActionListener(this);
days.add(nextButton);
++i;
control2panel.add(days);
getContentPane().add(control2panel,"Center");
pack();
}

Answer 1

Thanks for the help vanangrani, your info is ok.
This is a small bit of the code that i'm working on, have a look at the month methods. I have embedded one for show you how it should look but its static, I need to make up a method to load one month method only when selected from the menuItem.
He's the code anyway.
     import java.awt.*;
     import java.awt.event.*;
     import javax.swing.*;
     public class Test2 extends JFrame implements ActionListener{
     String[] months ={"January","February","March","April","May","June",
     "July","August","September","October","November","December"};
     String[] years ={"02","03","04","05","06","07","08","09","2010"};
     JLabel text, monthlabel;
     JMenu menu, menu2;
     JMenuBar menuBar = new JMenuBar();
     JMenuItem menuItem;
     int monthIndex = 0;
     public static void main(String[] args){
     try {
     UIManager.setLookAndFeel(
     UIManager.getCrossPlatformLookAndFeelClassName());
     } catch (Exception e) { }
     try {
     UIManager.put("Button.select", Color.blue);
     } catch (Exception e) {
     e.printStackTrace();
     Test2 test = new Test2();
     test.init();
     public void init(){
     //     Create the menu bar.
     menuBar = new JMenuBar();
     setJMenuBar(menuBar);
     //     First menu in the menu bar for Editing.
     menu = new JMenu("select a year");
     menu.setMnemonic(KeyEvent.VK_Y);
     menuBar.add(menu);
     //     Group of Editing tools in JMenuItems
     int y = 0;
     for(int x = 0; x < 9 ; x++){
     menuItem = new JMenuItem(years[y]);
     menuItem.addActionListener(this);
     menu.add(menuItem);
     ++y;
     // Second menu for months.
     menu2 = new JMenu("Months of the Year");
     menu2.setMnemonic(KeyEvent.VK_M);
     menuBar.add(menu2);
     // Group of months in JMenuItems
     int m = 0;
     for(int x = 0; x < 12 ; x++){
     menuItem = new JMenuItem(months[m]);
     menuItem.addActionListener(this);
     menu2.add(menuItem);
     ++m;
     JPanel controlpanel = new JPanel();
     controlpanel.setLayout(new GridLayout(2,1,1,1));
     JPanel month = new JPanel();
     month.setLayout(new GridLayout(2,1));
     monthlabel = new JLabel(months[monthIndex], JLabel.CENTER);
     month.add(monthlabel);
     getContentPane().add(menuBar,"North");
     getContentPane().add(month,"Center");
     /********* below is the static method ***********/
     jan();
     pack();
     JPanel weekdays = new JPanel();
     weekdays.setLayout(new GridLayout(1,7));
     weekdays.add(new JLabel("Sun", JLabel.CENTER));
     weekdays.add(new JLabel("Mon", JLabel.CENTER));
     weekdays.add(new JLabel("Tue", JLabel.CENTER));
     weekdays.add(new JLabel("Wed", JLabel.CENTER));
     weekdays.add(new JLabel("Thu", JLabel.CENTER));
     weekdays.add(new JLabel("Fri", JLabel.CENTER));
     weekdays.add(new JLabel("Sat", JLabel.CENTER));
     controlpanel.add(weekdays);
     getContentPane().add(controlpanel,"North");
     pack();
     show();
     public void actionPerformed(ActionEvent e) {
     Toolkit.getDefaultToolkit().beep();
     String actionstring = e.getActionCommand();
     for (int i = 0;i<12;i++){
     if (actionstring.compareToIgnoreCase(months) == 0){
     JOptionPane.showMessageDialog(this,"You selected "
     + e.getActionCommand() + " 2002"); // this works
     monthlabel.setText(months[i]);
     /* 12 methods for the months of the year */
     public void jan(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     for(int x=0;x<2;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for(int x =0; x < 31; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.setForeground(Color.red);
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void feb(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     for(int x=0;x<5;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for (int x =0; x < 28; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void mar(){     // must add extra
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(6,7));
     for(int x=0;x<5;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for(int x =0; x < 31; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     for(int x=0;x<6;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void apr(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     for(int x=0;x<1;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for (int x =0; x < 30; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void may(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     for(int x=0;x<3;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for (int x =0; x < 31; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void jun(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(6,7));
     for(int x=0;x<6;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for (int x =0; x < 30; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     for(int x=0;x<6;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     public void jul(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     for(int x=0;x<1;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for (int x =0; x < 31; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void aug(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     for(int x=0;x<4;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for (int x =0; x < 31; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void sep(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     int i =1;
     for (int x =0; x < 30; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     for(int x=0;x<5;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void oct(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     for(int x=0;x<2;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     int i =1;
     for (int x =0; x < 31; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void nov(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     int i =1;
     for (int x =0; x < 30; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();
     public void dec(){
     JPanel control2panel = new JPanel();
     JPanel days =new JPanel();
     days.setLayout(new GridLayout(5,7));
     int i =1;
     for (int x =0; x < 31; x++){
     JButton nextButton = new JButton(String.valueOf(i));
     nextButton.addActionListener(this);
     days.add(nextButton);
     ++i;
     for(int x=0;x<4;x++){
     JLabel blank = new JLabel("");
     days.add(blank);
     control2panel.add(days);
     getContentPane().add(control2panel,"Center");
     pack();