need some help understading why this is not working (palindrome loop)

[Anthony Pena]

import java.awt.*;  
import javax.swing.*;  
import java.awt.event.*;  

public class PalindromeCheck extends JApplet implements ActionListener{
	JTextField tf_Userin;
	JTextArea ta_Out;
	JLabel l_Instruc;
	JButton b_Check;
	JPanel pane;
	
	public void init()
	{
		setLayout (new FlowLayout());
		l_Instruc = new JLabel("Enter a word to see if its a palindrome");
		tf_Userin = new JTextField (10);
		ta_Out = new JTextArea(1,10);
		pane = new JPanel ();
		b_Check = new JButton("Check");
		b_Check.addActionListener(this);
		add(l_Instruc); add(tf_Userin); add(pane); add(b_Check);add(ta_Out);
	}
	public void actionPerformed (ActionEvent ae)
	{
	Object src =ae.getSource();
	String word = tf_Userin.getText();
	int i_Fstlet;
	int i_Laslet;
	int i_Midlet;
	int i_stLength;
	if (src==b_Check){
		
	i_stLength=word.length();
	
	i_Midlet =i_stLength/2;
	i_Laslet =i_stLength-1;
	i_Fstlet = 0;
	boolean isPal;
	while (i_Fstlet<=i_Midlet&&i_Laslet>=i_Midlet){
	if (word.charAt(i_Fstlet)!=word.charAt(i_Laslet)){
	isPal=false;
	}else if (word.charAt(i_Fstlet)==word.charAt(i_Laslet)){
	isPal= true;
	} 
	
	if (isPal=false)
	ta_Out.setText(word+" is not a palindrome");
	else if (isPal=true)
	ta_Out.setText(word+" is a palindrome"); 
}
}

}}

if anyone could tell me whats going on here, i ran it through the a debugger but i am not yet experianced enough to identify the issue and fix it, any tips would be appreciated. thanks!

[Hunter McMillen]

I responded to this in the Applets Forum, let people know when you post in more than one spot.

Link to response:
https://coderanch.com/t/539159/Applets/java/palindrome-checker-tried-debug-keeps

Hunter