Help using find dialog box with JTextArea

Question

Hi i am using JTextField and getting a file read and then displayed in JTextField. Now i have used a dialog box for finding string within that file displayed in JTextField. I want to make it such that it ignores cases while finding the string and also want to make find next available in Find dialog box.
My code is: -
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import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import javax.swing.*;
public class TextAreaEx extends JPanel implements ActionListener {
static JFrame fr;
JButton button1;
JTextArea tx;
TextAreaEx()
super(new BorderLayout());
tx=new JTextArea();
FileInputStream fis=null;
StringBuffer sb=new StringBuffer();
try{
fis=new FileInputStream("C:/customers.xml");
BufferedReader br=new BufferedReader(new InputStreamReader(fis));
String h="";
while((h = br.readLine()) != null) {
sb.append(h + "\n");
catch(Exception e)
{ e.printStackTrace();}
tx.setText(sb.toString());
button1=new JButton("Find");
button1.addActionListener(this);
add(button1,BorderLayout.PAGE_START);
button1.setFocusable(false);
JScrollPane p1=new JScrollPane(tx);
add(p1);
public static void createShow()
JFrame.setDefaultLookAndFeelDecorated(true);
fr=new JFrame("My Frame");
TextAreaEx ob=new TextAreaEx();
ob.setOpaque(true);
fr.setContentPane( ob);
fr.setSize(400,400);
// fr.pack();
fr.setVisible(true);
public static void main(String s[])
createShow();
/* (non-Javadoc)
* @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
public void actionPerformed(ActionEvent e) {
if(e.getSource()==button1)
String s=(String)JOptionPane.showInputDialog(fr,"FIND:\n","Find",JOptionPane.INFORMATION_MESSAGE,
null,null,null);
System.out.println(s);
String text=tx.getText();
int offset=text.indexOf(s);
System.out.println(offset);
tx.setFocusable(true );
tx.select(offset,s.length()+offset );

Answer 1

Sorry its not JTextField its JTextArea as mentioned in first line of first post.