the selectformat.java file.txt

Creating a Speech-Enabled Calendar Application

/*Import required packages*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.JOptionPane;
import java.util.*;
import javax.swing.event.*;
import java.awt.GridLayout;
/*
Class: SelectFormat-Creates a user interface to set the date format
Methods:
actionPerformed(): Defines the operations to be performed, when the end user clicks any button
*/
public class SelectFormat extends JFrame implements ActionListener
{
/* Declare variables*/
Font f,f1;
JPanel pane,buttonPanel;
JRadioButton rb1,rb2,rb3,rb4,rb5,rb6;
ButtonGroup bg;
JLabel title;
JButton ok,cancel;
public static String retvalue="dd/mm/yyyy";
SpeechCalendar calendar = null;
/* 
SelectFormat():Default constructor of SelectFormat class
Parameters:
calendar: An object of SpeechCalendar class
Return Type: NA
*/
public SelectFormat(SpeechCalendar calendar)
 {
   this.calendar = calendar;
   /* Initialize the object of JPanel class*/
   pane=new JPanel();
   /* Initialize a JPanel to add buttons.*/
   buttonPanel=new JPanel();
   /*
   Set the layout of JPanel, buttonPanel
   */
   buttonPanel.setLayout(new GridLayout(1,2));
   /*
   Initialize the JRadioButtons
   */
   rb1=new JRadioButton("dd/mm/yy");
   rb2=new JRadioButton("dd/mm/yyyy");
   rb3=new JRadioButton("mm/dd/yy");
   rb4=new JRadioButton("mm/dd/yyyy");
   rb5=new JRadioButton("yy/mm/dd");
   rb6=new JRadioButton("yyyy/mm/dd");
   /*
   Initialize a ButtonGroup
   */
   bg=new ButtonGroup();
   /*
   Add JRadioButtons to the ButtonGroup
   */
   bg.add(rb1);
   bg.add(rb2);
   bg.add(rb3);
   bg.add(rb4);
   bg.add(rb5);
   bg.add(rb6);
   /*
   Set the layout of the JPanel, pane
   */
   pane.setLayout(new GridLayout(8,1));
   /*
   Create objects of Font class
   f= font("Verdana",Font.BOLD,12);
   f1=new Font("Verdana",Font.BOLD,10);
   /*
   Set the title of the SelectFormat window
   */
   title=new JLabel(" Select the format of the date    ");
   title.setFont(f);
   /*
   Initialize objects of JButton class
   */
   ok=new JButton("OK");
   cancel=new JButton("Cancel");
   /*
   Set font of buttons
   */
   ok.setFont(f1);
   cancel.setFont(f1);
   /*
   Add action listener to the JButtons
   */
   ok.addActionListener(this);
   cancel.addActionListener(this);
   /*
   Add JButtons to the buttonPanel
   */
   buttonPanel.add(ok);
   buttonPanel.add(cancel);
   /* 
   Set the contents of the JPanel, pane
   */
   pane.add(title);
   pane.add(rb1);
   pane.add(rb2);
   pane.add(rb3);
   pane.add(rb4);
   pane.add(rb5);
   pane.add(rb6);
   pane.add(buttonPanel);
   getContentPane().add(pane);
}
/*
actionPerformed(): Defines the actions to be performed when the user clicks a button
Parameters:
ev: An object of ActionEvent
Return Type:NA
*/
public void actionPerformed(ActionEvent ev)
{
   /*
   This code executes when the user clicks the OK button
   */
   if(ev.getSource()==ok)
   {
      /* 
      Retrieve all elements of the Buttongroup in an enumeration
      */
      Enumeration enum=bg.getElements();
      /*
      check if there exists any element in the enumeration
      */
      while(enum.hasMoreElements())
      {
         JRadioButton button=(JRadioButton)enum.nextElement();
         /*
         Retrieve the label of the selected JRadioButton
         */
         if (button.isSelected())
         {
               retvalue=button.getText();
               this.setVisible(false);
               calendar.setFormat(retvalue);
         }
      }
   }
   /*
   This code executes when the user clicks the Cancel button
   */
   else if(ev.getSource()==cancel)
   {
      this.setVisible(false);
   }
}
}