javalab24.java

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.util.Scanner;

class guiDemo extends JFrame implements ActionListener{
    private JTextField t1;
    private JTextField t2;
    private JButton b1;
    private JButton b2;
    private JButton b3;

    public guiDemo(){
        createView();

        setTitle("Vowel COunter");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(400, 150);
        setLocationRelativeTo(null);
        setResizable(true);
        setVisible(true);
    }

    private void createView(){
        JPanel panel = new JPanel();
        getContentPane().add(panel);
        panel.setLayout(new FlowLayout());
        JLabel l1 = new JLabel("Enter a String: ");
        t1 = new JTextField(100);
        JLabel l2 = new JLabel("Number of vowels: ");
        t2 = new JTextField(100);
        t2.setEditable(false);
        b1 = new JButton("countButton");
        // b1.addActionListener(new CountVowel());
        b2 = new JButton("resetButton");
        b3 = new JButton("Exit");

        b1.addActionListener(this);
        b2.addActionListener(this);
        b3.addActionListener(this);
        panel.add(l1);
        panel.add(t1);
        panel.add(l2);
        panel.add(t2);
        panel.add(b1);
        panel.add(b2);
        panel.add(b3);
        add(panel);
    }
    public void actionPerformed(ActionEvent ae){
        if(ae.getSource()==b1){
            System.out.println("Count button clicked");
            String st = t1.getText().toLowerCase();
            int count=0;
            for(char c : st.toCharArray()){
                if("aeiou".indexOf(c)!=-1){
                    count++;
                }
            }
            t2.setText(count + ""); 
        }
        else if(ae.getSource()==b2){
            t1.setText("");
            t2.setText("");
            t1.requestFocus();
        }
        else if(ae.getSource()==b3){
            System.exit(0);
        }
    }
}

public class javalab24 {
    public static void main(String[] args) {
        guiDemo ob = new guiDemo();
    }
}