speechcalendar.java

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.text.DateFormat;

/*
	Class: SpeechCalendar-Creates the user interface for the speech-enabled calendar.
		Methods:
			CalculateDay(): Retrieves the current day from the system calendar.
			CalculateDate(): Retrieves the current date from the system calendar.
			CalculateYime(): Retrieves the current time from the system clock.
			actionPerformed(): Defines the actions to be performed when user clicks the buttons in the user interface.
			getMntName(): Returns the string value of the month that is passed as a parameter.
			dateIsValid(): Validates the date entered by the user.
			getYear(): Returns the string value for the year.
			main(): Creates an object of SpeechCalendar class.
			setFormat(): Sets the date in the format specified by the user.
*/

public class SpeechCalendar extends JFrame implements ActionListener
{
	/*Declare variables*/
	Calendar c;
	String format;
	String dayValue,dateValue,timeValue,speak,k1,k2,k3;
	JTabbedPane pane;
	JPanel mainPanel;
	JPanel datePanel,dayPanel,timePanel;
	ButtonGroup dayBg,dateBg,timeBg;
	JRadioButton cDate,selDate,cDay,selDay,cTime,selTime;
	JLabel appTitle;
	JButton dateSpeak,daySpeak,timeSpeak,dateCancel,dayCancel,timeCancel,selFormat;
	JTextField date,day,time,dateText,dayText,timeText;
	String dayString,dateString,timeString;
	SelectFormat sf = null;
	Font f,f1;
	/*
		SpeechCalendar(): Default constructor of SpeechCalendar class.
		Parameters:NA
		Return Type:NA
	*/
	public SpeechCalendar()
	{
		/*Set the look and feel for the application*/
		try
		{
			UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
		}
		catch(Exception e)
		{
			System.out.println("Unknown Look and Feel." + e);	
		}
		/*Initialize object of SelectFormat class*/
		sf = new SelectFormat(this);
		sf.setSize(250,250);
		sf.setResizable(false);
		/*Create an instance of Calendar class*/
		Calendar c=Calendar.getInstance();
		/* Create objects of Font class*/
		f=new Font("Verdana",Font.BOLD,12);
		f1=new Font("Verdana",Font.BOLD,10);
		/*Initialize main panel*/
		appTitle=new JLabel("Speech-Enabled Calendar");
		appTitle.setFont(f);
		mainPanel=new JPanel();
		/*Initialize contents of JTabbedPane*/
		pane=new JTabbedPane();
		datePanel=new JPanel();
		dayPanel=new JPanel();
		timePanel=new JPanel();
		/*Add tabs to JTabbedPane*/
		pane.addTab("Date",datePanel);
		pane.addTab("Day",dayPanel);
		pane.addTab("Time",timePanel);
		/*Create button groups*/
		dateBg=new ButtonGroup();
		dayBg=new ButtonGroup();
		timeBg=new ButtonGroup();
		/*Initialize JRadioButtons*/
		cDate=new JRadioButton("Current Date",true);
		cDay=new JRadioButton("Current Day",true);
		cTime=new JRadioButton("Current Time",true);
		selDate=new JRadioButton("Enter Date (dd/mm/yyyy)",false);
		selDay=new JRadioButton("Enter Day",false);
		selTime=new JRadioButton("Enter Time (hh:mm:ss)",false);
		/* Set font of JRadioButtons*/
		cDate.setFont(f1);
		cDay.setFont(f1);
		cTime.setFont(f1);
		selDate.setFont(f1);
		selDay.setFont(f1);
		selTime.setFont(f1);
		/*Add JRadioButtons to ButtonGroup*/
		dateBg.add(cDate);
		dateBg.add(selDate);
		dayBg.add(cDay);
		dayBg.add(selDay);
		timeBg.add(cTime);
		timeBg.add(selTime);
		/*Initialize JTextFields*/
		dateText=new JTextField(15);
		dayText=new JTextField(15);
		timeText=new JTextField(15);
		date=new JTextField(15);
		day=new JTextField(15);
		time=new JTextField(15);
		/*Initialize JButtons*/
		dateSpeak=new JButton("Speak");
		daySpeak=new JButton("Speak");
		timeSpeak=new JButton("Speak");
		dateCancel=new JButton("Exit");
		dayCancel=new JButton("Exit");
		timeCancel=new JButton("Exit");
		selFormat=new JButton("Select Date Format");
		/* Set Font of buttons*/
		dateSpeak.setFont(f1);
		daySpeak.setFont(f1);
		timeSpeak.setFont(f1);
		dateCancel.setFont(f1);
		dayCancel.setFont(f1);
		timeCancel.setFont(f1);
		selFormat.setFont(f1);
		/*Add action listeners to the JButtons*/
		dateSpeak.addActionListener(this);
		daySpeak.addActionListener(this);
		timeSpeak.addActionListener(this);
		dateCancel.addActionListener(this);
		dayCancel.addActionListener(this);
		timeCancel.addActionListener(this);
		selFormat.addActionListener(this);
		/* Set the contents of datePanel*/
		datePanel.setLayout(new GridLayout(4,2));
		datePanel.add(cDate);
		datePanel.add(date);
		datePanel.add(selDate);
		datePanel.add(dateText);
		datePanel.add(selFormat);
		JLabel tmp=new JLabel("");
		datePanel.add(tmp);
		datePanel.add(dateSpeak);
		datePanel.add(dateCancel);
		/*Set contents of day panel*/
		dayPanel.setLayout(new GridLayout(3,2));
		dayPanel.add(cDay);
		dayPanel.add(day);
		dayPanel.add(selDay);
		dayPanel.add(dayText);
		dayPanel.add(daySpeak);
		dayPanel.add(dayCancel);
		/*Set contents of time panel*/
		timePanel.setLayout(new GridLayout(3,2));
		timePanel.add(cTime);
		timePanel.add(time);
		timePanel.add(selTime);
		timePanel.add(timeText);
		timePanel.add(timeSpeak);
		timePanel.add(timeCancel);
		/* Set contents of mainPanel*/	
		mainPanel.add(appTitle);
		mainPanel.add(pane);
		/*Initialize the main window*/
		setSize(400,200);
		setResizable(false);
		/*Add mainPanel to the current window*/
		getContentPane().add(mainPanel);
		/*
		Call CalculateDay() method to retrieve the current day
		*/
		dayValue=CalculateDay(c);
		/* 
		Call CalculateDate() method to retrieve the current date
		*/
		dateValue=CalculateDate(c);
		/* 
		Call CalculateTime() method to retrieve the current time
		*/
		timeValue=CalculateTime(c);
		/*
		Set current date value in the date textfield
		*/
		date.setText(dateValue);
		/*
		Set current day value in the day textfield
		*/
		day.setText(dayValue);
		/*
		Set current time value in the time textfield
		*/
		time.setText(timeValue);
		/*
		Disable the text fields displaying the current date, day, and time
		*/
		date.setEnabled(false);
		day.setEnabled(false);
		time.setEnabled(false);
		format="dd/mm/yyyy";
		
	}
	/*
		CalculateDay(): Retrieves the value of current day from the systenm calendar. 
		parameters:
				c: An object of Calendar class.
		Return Type:String
	*/
	public String CalculateDay(Calendar c) 
	{
		/*Get the current value of day*/
		int day = c.get(Calendar.DAY_OF_WEEK);
		String day1 = null;
		/* 
		Convert the current day to its string value
		*/
		  if(day==1) 
			  day1 = "Sunday";
		  else if(day==2) 
			  day1 = "Monday";
		  else if(day==3) 
			  day1 = "Tuesday";
		  else if(day==4) 
			  day1 = "Wednsday";
		  else if(day==5) 
			  day1 = "Thursday";
		  else if(day==6) 
			  day1 = "Friday";
		  else if(day==7) 
			  day1 = "Saturday";
		/*Return current day*/
		   return day1;
	}
	/*
		CalculateDate(): Returns the current date
		Parameters:
				c: An object of Calendar class.
		Return Type: String
	*/
	public String CalculateDate(Calendar c)
	{
		/*Get the current date*/
		int date=c.get(Calendar.DAY_OF_MONTH);
		/*Get the current month*/
		int mnt=c.get(Calendar.MONTH);
		/*Get the current year*/
		int year=c.get(Calendar.YEAR);
		String date1;
		/*
		Convert the current date, month, and year to the corresponding string values
		*/
		k1=String.valueOf(year);
		if (mnt<10)
		{
			String val="0";
			k2=val+String.valueOf(mnt+1);
		}
		k3=String.valueOf(date);
		date1=k3+"/"+k2+"/"+k1;
		/* Return current date*/
		return date1;
	}
	/*
		CalculateTime(): Returns the value of current time from the system calendar.
		Parameters:
				c: An object of Calendar class.
		Return Type: String.
	*/
	public String CalculateTime(Calendar c)
	{
		/*Get the value of present hour*/
		int hour=c.get(Calendar.HOUR);
		/*Get the value of present minutes*/
		int minute=c.get(Calendar.MINUTE);
		/*Get the value of present seconds*/
		int second=c.get(Calendar.SECOND);
		int a_p=c.get(Calendar.AM_PM); 
		
		/*
		Convert the present hour, minutes, and seconds to string
		*/
		String hr,min,sec;
		String tempTime="0";
		String timeTot="12:00:00 AM";
		if (hour<9)
			hr=tempTime+String.valueOf(hour);
		else
			hr=String.valueOf(hour);		
		if(minute<10)
			min=tempTime+String.valueOf(minute);
		else
			min=String.valueOf(minute);
		if(second<10)
			sec=tempTime+String.valueOf(second);
		else
			sec=String.valueOf(second);
		
		if (a_p==0)
		{
			timeTot=hr+":"+min+":"+sec+" AM";
		}
		else
		{
			 timeTot=hr+":"+min+":"+sec+" PM";
		}
		
		/*Return the present time*/
		return timeTot;
	}
	/* 
		actionPerformed(): Defines the operation to be performed when the user clicks a button.
		Parameters:
				ev: An object of ActionEvent.
		Return Type: NA
	*/
	 public void actionPerformed(ActionEvent ev)
	{
		/*
		This part of the code executes if the user clicks the Cancel button in any pane of the JTabbedPane
		*/
		if((ev.getSource()==dateCancel)||(ev.getSource()==dayCancel)||(ev.getSource()==timeCancel))
		{
			System.exit(0);
		}
		else
			/*
			This part of code executes if the user clicks the Select date format button
			*/
			if(ev.getSource()==selFormat)
			{
				sf.setVisible(true);
			}
		else 
		{	
			/* 
			This part of code executes when the user clicks the Speak button in the Day pane of the JTabbedPane
			*/
			if(ev.getSource()==daySpeak)
			{
			speak="No entry specified";
			/*
			Checks if the JRadioButton Current Day is selected
			*/
			if(cDay.isSelected())
				{
				speak=dayValue;						
				}
				else
					/* 
					Checks if the JRadioButton, Enter Date is selected
					*/
					if(selDay.isSelected())
					{
						if ((dayText.getText().compareToIgnoreCase("Monday")!=0)&&(dayText.getText().compareToIgnoreCase("Tuesday")!=0)&&(dayText.getText().compareToIgnoreCase("Wednesday")!=0)&&(dayText.getText().compareToIgnoreCase("Thursday")!=0)&&(dayText.getText().compareToIgnoreCase("Friday")!=0)&&(dayText.getText().compareToIgnoreCase("Saturday")!=0)&&(dayText.getText().compareToIgnoreCase("Sunday")!=0))
						{
							/* Prompts that the day entered is wrong*/
							speak="You have entered an invalid entry for day, Enter again";
							dayText.setText("");
							dayText.grabFocus();
						}
						else
							/*Speaks the day entered by the user*/
							speak=dayText.getText();
					} 
			}
			/*
			This part of code executes when the user clicks the Speak button in the Date pane
			*/
			else if(ev.getSource()==dateSpeak)
			{
				speak="No entry specified";
				
				/*Checks if the JRadioButton, Current Date is selected*/
				if(cDate.isSelected())
				{
					/*Initialize an object of StringTokenizer class*/
					StringTokenizer st=new StringTokenizer(date.getText(),"/");
					/*Checks if there exists any tokens in the StringTokenizer class*/
					while(st.hasMoreTokens())
					{
						format=selDate.getLabel().substring(12,22);
						String val1=st.nextToken();
						String val2=st.nextToken();
						String val3=st.nextToken();
						String temp;
						/*
						Checks if the selected format is yyyy/mm/dd or yy/mm/dd
						*/
						if (format.equals("yyyy/mm/dd")||format.equals("yy/mm/dd"))
						{
							temp=getYear(Integer.parseInt(val1));
							speak=temp+"      "+getMntName(val2)+"      "+val3;
							System.out.println(speak);
						}
						else
						/*
						Checks if the selected format is mm/dd/yy or mm/dd/yyyy
						*/
						if(format.equals("mm/dd/yy")||format.equals("mm/dd/yyyy"))