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jpanel and using the timer class
hi all, im making a school management system using netbeans java desktop application
just need help displaying moving text on a jpanel at the bottom of my mainform. i used a timer class bt doesnt work.
i also have another jpanel that displays the current user and current time and date which also uses a timer class and an actionperformed method to update the time every 1 second.
my code is as follows
/* * To change this template, choose Tools | Templates * and open the template in the editor. */ /* * MainForm.java * * Created on Mar 19, 2011, 8:48:29 PM */ package sms; import java.awt.event.ActionListener; import java.util.Locale; import javax.swing.Timer; //import sms.MainForm.MovMsgJPanel.TimerListener; /** * * @author makswizzy */ public class MainForm extends javax.swing.JFrame implements ActionListener { [B][COLOR="blue"]//CODE FOR THE JPANEL TO DISPLAY THE MOVING MESSAGE[/COLOR][/B] private static class MovMsgJPanel extends javax.swing.JPanel { private String message = "Welcome to java"; private int xCoordinate = 0; private int yCoordinate = 20; public MovMsgJPanel() { Timer timer = new Timer(1000, new TimerListener()); timer.start(); } //paint message @Override public void paintComponent(java.awt.Graphics g){ super.paintComponent(g); if(xCoordinate >getWidth()){ xCoordinate = -20; } xCoordinate +=5; g.drawString("message moving", xCoordinate, yCoordinate); } class TimerListener implements ActionListener{ //handle ActionEvent public void actionPerformed(java.awt.event.ActionEvent e){ repaint(); } } } private java.sql.Connection dbconn = null; [B][COLOR="blue"]TIMER CLASS TO UPDATE THE TIME[/COLOR][/B] Timer timer = new Timer(1000, (ActionListener) this); /** Creates new form MainForm */ public MainForm(java.sql.Connection databaseConnection) { dbconn = databaseConnection; initComponents(); this.add(new MovMsgJPanel()); CurrentUserLbl.setText("Current user" + " "+System.getProperty("active user"));//setting the current user as the logged in user timer.start(); } public void actionPerformed(java.awt.event.ActionEvent e){ java.util.Calendar calendar = new java.util.GregorianCalendar();//creating a calender object and setting it to the gregorian calendar java.text.DateFormat formatter = java.text.DateFormat.getDateTimeInstance(java.text.DateFormat.FULL, java.text.DateFormat.MEDIUM,Locale.getDefault());///formatting the date and time java.util.TimeZone timezone = java.util.TimeZone.getDefault();//getting the default time zone as per the system time zone and assigning it to the variable timezone formatter.setTimeZone(timezone);//setting the time zone to the format and can also be done as below //formatter.setTimeZone(java.util.TimeZone.getDefault()); CurrentTimeLbl.setText(formatter.format(calendar.getTime())); } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { java.awt.GridBagConstraints gridBagConstraints; TaskBarJPanel = new javax.swing.JPanel(); CurrentUserLbl = new javax.swing.JLabel(); CurrentTimeLbl = new javax.swing.JLabel(); MainDesktopPane = new javax.swing.JDesktopPane(); MovMsgJPanel = new javax.swing.JPanel(); MenuBar = new javax.swing.JMenuBar(); jMenu1 = new javax.swing.JMenu(); jMenu2 = new javax.swing.JMenu(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); org.jdesktop.application.ResourceMap resourceMap = org.jdesktop.application.Application.getInstance().getContext().getResourceMap(MainForm.class); setTitle(resourceMap.getString("Form.title")); // NOI18N setName("Form"); // NOI18N getContentPane().setLayout(new java.awt.GridBagLayout()); TaskBarJPanel.setName("TaskBarJPanel"); // NOI18N TaskBarJPanel.setLayout(new java.awt.GridBagLayout()); CurrentUserLbl.setHorizontalAlignment(javax.swing.SwingConstants.LEFT); CurrentUserLbl.setText(resourceMap.getString("CurrentUserLbl.text")); // NOI18N CurrentUserLbl.setName("CurrentUserLbl"); // NOI18N gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH; gridBagConstraints.weightx = 1.0; TaskBarJPanel.add(CurrentUserLbl, gridBagConstraints); CurrentTimeLbl.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT); CurrentTimeLbl.setText(resourceMap.getString("CurrentTimeLbl.text")); // NOI18N CurrentTimeLbl.setName("CurrentTimeLbl"); // NOI18N gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH; gridBagConstraints.weightx = 1.0; TaskBarJPanel.add(CurrentTimeLbl, gridBagConstraints); gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.gridx = 0; gridBagConstraints.gridy = 3; gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH; gridBagConstraints.anchor = java.awt.GridBagConstraints.SOUTH; gridBagConstraints.insets = new java.awt.Insets(2, 2, 2, 2); getContentPane().add(TaskBarJPanel, gridBagConstraints); MainDesktopPane.setBackground(resourceMap.getColor("MainDesktopPane.background")); // NOI18N MainDesktopPane.setName("MainDesktopPane"); // NOI18N gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.gridx = 0; gridBagConstraints.gridy = 0; gridBagConstraints.gridheight = 2; gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH; gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST; gridBagConstraints.weightx = 1.0; gridBagConstraints.weighty = 150.0; gridBagConstraints.insets = new java.awt.Insets(2, 2, 2, 2); getContentPane().add(MainDesktopPane, gridBagConstraints); MovMsgJPanel.setName("MovMsgJPanel"); // NOI18N gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.gridx = 0; gridBagConstraints.gridy = 2; gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH; gridBagConstraints.anchor = java.awt.GridBagConstraints.SOUTH; gridBagConstraints.insets = new java.awt.Insets(2, 2, 2, 2); getContentPane().add(MovMsgJPanel, gridBagConstraints); MenuBar.setName("MenuBar"); // NOI18N jMenu1.setText(resourceMap.getString("jMenu1.text")); // NOI18N jMenu1.setName("jMenu1"); // NOI18N MenuBar.add(jMenu1); jMenu2.setText(resourceMap.getString("jMenu2.text")); // NOI18N jMenu2.setName("jMenu2"); // NOI18N MenuBar.add(jMenu2); setJMenuBar(MenuBar); pack(); }// </editor-fold> /** * @param args the command line arguments */ /* public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new MainForm().setVisible(true); } }); } * */ // Variables declaration - do not modify private javax.swing.JLabel CurrentTimeLbl; private javax.swing.JLabel CurrentUserLbl; private javax.swing.JDesktopPane MainDesktopPane; private javax.swing.JMenuBar MenuBar; private javax.swing.JPanel MovMsgJPanel; private javax.swing.JPanel TaskBarJPanel; private javax.swing.JMenu jMenu1; private javax.swing.JMenu jMenu2; // End of variables declaration }
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