import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
 
public class LetterStringManip extends JFrame
{//declaring variables
     private JLabel stringOfLettersL, lengthL, lengthRL, vowelsL, vowelsRL, consonantsL, consonantsRL;
	  private JTextField stringOfLettersTF;
	  private JButton lengthB,vowelB, quitB;
	  private LengthButtonHandler lbHandler;
	  private VowelButtonHandler vbHandler;
	  private QuitButtonHandler qbHandler;
	  private static final int WIDTH = 750;
	  private static final int HEIGHT = 150;
 
	  public LetterStringManip()
	  {// setting up GUI window with buttons
	      stringOfLettersL = new JLabel("Enter a String of Letters", SwingConstants.CENTER);
			lengthL = new JLabel("Length of String: ", SwingConstants.CENTER);
			lengthRL = new JLabel("", SwingConstants.LEFT);
			vowelsL = new JLabel("Number of Vowels: ", SwingConstants.CENTER);
			vowelsRL = new JLabel("", SwingConstants.LEFT);
			consonantsL = new JLabel("Number of Consonats: ", SwingConstants.CENTER);
			consonantsRL = new JLabel("", SwingConstants.LEFT);
 
			stringOfLettersTF = new JTextField(15);
 
			lengthB = new JButton("Length");
			lbHandler = new LengthButtonHandler();
			lengthB.addActionListener(lbHandler);
 
			vowelB = new JButton("Vowels");
			vbHandler = new VowelButtonHandler();
			vowelB.addActionListener(vbHandler);
 
			quitB = new JButton("Quit");
			qbHandler = new QuitButtonHandler();
			quitB.addActionListener(qbHandler);
 
			setTitle("String Of Letters");//Window title
 
			Container pane = getContentPane();
 
			pane.setLayout(new GridLayout(3,4)); //Window layout
 
			pane.add(stringOfLettersL);
			pane.add(stringOfLettersTF);
			pane.add(lengthL);
			pane.add(lengthRL);
			pane.add(vowelsL);
			pane.add(vowelsRL);
			pane.add(consonantsL);
			pane.add(consonantsRL);
			pane.add(lengthB);
			pane.add(vowelB);
			pane.add(quitB);
 
 
			setSize(WIDTH, HEIGHT);
			setVisible(true);
			setDefaultCloseOperation(EXIT_ON_CLOSE);
 
	  }//closes public LetterStringManip()
 
	  private class LengthButtonHandler implements ActionListener
	  {
	      public void actionPerformed(ActionEvent e)//Length Button is clicked, getLength() method is performed
			{
 
			   getLength();
 
			}//closes public void actionPerformed(ActionEvent e)
 
	  }//closes private class LengthButtonHandler implements ActionListener
 
	  private class VowelButtonHandler implements ActionListener
	  {
	      public void actionPerformed(ActionEvent e)//Vowels Button is clicked, getVowels() method is performed
			{
 
			   getVowels();
 
			}//closes public void actionPerformed(ActionEvent e)
 
	  }//closes private class VowelButtonHandler implements ActionListener
 
	  private class QuitButtonHandler implements ActionListener//Quit Buttton is pressed
	  {
	      public void actionPerformed(ActionEvent e)
			{
			    System.exit(0);
 
			}//closes public void actionPerformed(ActionEvent e)
 
	  }//closes private class QuitButtonHandler implements ActionListener
 
	  		public void getLength()//gets the length of the string
			{ 
			    String letString = (stringOfLettersTF.getText());
			    String lengthString;
             int length;
				 length = letString.length();
				 lengthString = Integer.toString(length);
				 lengthRL.setText(lengthString);
			 }//closes public void getLength()
 
	  		public void getVowels()//gets the number of vowels in the string
			{     
             String letString = (stringOfLettersTF.getText());
			    String vowString;
				 String conString;
             int countVow = 0;
				 int countCon = 0; 
				 int i;
				 int length = letString.length();
				 char[] letter = new char[length];
 
             for (i = 0; i < letString.length(); i++)
				 {
                 letter[i] = letString.charAt(i);
                 if (letter[i]=='a' || letter[i]=='e' || letter[i]=='i' || letter[i]=='o' || letter[i]=='u')
                 countVow++;
				 }//closes for
 
				 countCon = letString.length() - countVow;
             vowString = Integer.toString(countVow);
				 conString = Integer.toString(countCon);
				 vowelsRL.setText(vowString); 
				 consonantsRL.setText(conString);
 
			 }//closes public void getVowels()
 
	  public static void main(String[] args)
	  {
	      LetterStringManip stringObject = new LetterStringManip();
 
	  }// closes public static void main(String[] args)
 
}//closes public class LetterStringManip extends JFrame