conversion from speech to text using Sphinx in java does not produce correct result

package speechtotext;

import edu.cmu.sphinx.frontend.util.Microphone;
import edu.cmu.sphinx.recognizer.Recognizer;
import edu.cmu.sphinx.result.Result;
import edu.cmu.sphinx.util.props.ConfigurationManager;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;


public class HelloWorld extends JApplet  implements ActionListener{
 
  private JButton b1 = new JButton("SPEAK"), b2 = new JButton("STOP");
  JTextArea textArea = new JTextArea(7,30);
  Result result;
  ConfigurationManager cm;
  Recognizer recognizer;
  Microphone microphone;
  String resultText ;
  
  public void init() {
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    Image image = Toolkit.getDefaultToolkit().createImage("C:\\Users\\arsa\\Desktop\\1.png");
    Image scaled = image.getScaledInstance(300, 550, Image.SCALE_SMOOTH);
    JLabel label = new JLabel(new ImageIcon(scaled));
    cp.add(label,BorderLayout.CENTER);
    textArea.setText("");
    textArea.setLineWrap(true);
    textArea.setEditable(false);
    add(textArea,"Center");
    cp.add(b2,FlowLayout.LEFT);
    cp.add(b1,FlowLayout.LEFT);
    cp.add(textArea);
    b1.addActionListener(this);
    b2.addActionListener(this);
    cm = new ConfigurationManager(HelloWorld.class.getResource("helloworld.config.xml"));
    recognizer = (Recognizer) cm.lookup("recognizer");
    System.out.println("Successful1 allocation");
    recognizer.allocate();
    System.out.println("Successful1 allocation1");
    microphone = (Microphone) cm.lookup("microphone");
     if (!microphone.startRecording()) {
            System.out.println("Cannot start microphone.");
            recognizer.deallocate();
            System.exit(1);
        }
  }
@Override
    public void actionPerformed(ActionEvent e) {
    String str=e.getActionCommand();
     if (e.getSource() == b1)
     {
         result = recognizer.recognize();                
     }   
     else  if (e.getSource() == b2)
     {
         if (result != null) {
             resultText = result.getBestPronunciationResult();
             if(resultText!=null)
                textArea.setText("You said: " + resultText + '\n');
            else if(resultText==null)
                textArea.setText("I couldn't hear what you said.\n");
         }
         else if(result==null)
             textArea.setText("Cheater!! Cheater!! you didn't say anything....\n");
     }
   }

#JSGF V1.0;

/**
 * JSGF Grammar for Hello World example
 */

grammar hello;

public <greet> = (Good morning | Hello) ( Bhiksha | Evandro | Paul | Philip | Rita | Will );