How to map small letters with capital letters????

Question

Hi,
In my application i have to filter the element in the JList.......
The filtering techniques i used have done the correct job .....
But i had the problem that Jlist contains the elements with Titlecase...when i give the small 'a' in the textfield i should require to display element with starting with A element
DocumentListener listner = new DocumentListener() {
public void insertUpdate(DocumentEvent e) {
javax.swing.text.Document inse = e.getDocument();
try {
lastsearch = inse.getText(0, inse.getLength());
filter(lastsearch);
} catch (Exception tt)
tt.printStackTrace();
public void removeUpdate(DocumentEvent e) {
javax.swing.text.Document inse = e.getDocument();
try {
lastsearch = inse.getText(0, inse.getLength());
filter(lastsearch);
} catch (Exception tt)
tt.printStackTrace();
public void changedUpdate(DocumentEvent e) {
jTextField5.getDocument().addDocumentListener(listner);
jList1.setModel(listmodel);
the filter method contains the following code;
void filter(String search) {
listmodel.clear();
for (Object element : collect) {
if (element.toString().indexOf(search, 0) == 0) {
listmodel.addElement(element);
//fireContentsChanged(this, 0, getSize());
private void fireContentsChanged(student aThis, int i, Dimension size) {
// throw new UnsupportedOperationException("Not yet implemented");
My listmodel and collect contains the following elements
Aruna
Anub
Sivekumae
pls help me out
Shanthy

Answer 1

you are comparing strings with
if (element.toString().indexOf(search, 0) == 0) {what you can do is do something like
if (element.toString ().toLowerCase ().contains (search.toLowerCase ())) {All the converting toLowerCase is just so the caps are ignored. If you really want starting strings only, you use startswith instead:
if (element.toString ().toLowerCase ().startsWith(search.toLowerCase ())) {hope this helps!