Auto Complete ComboBox (sem levar em conta acentuação) [RESOLVIDO]

public static String removeCaracteresEspeciais(String str) {
		return str.replace('Á', 'A').replace('À', 'A').replace('Â', 'A').replace('Ä', 'A').replace('Ã', 'A').replace('É', 'E')
				.replace('È', 'E').replace('Ê', 'E').replace('Ë', 'A').replace('Í', 'I').replace('Ì', 'I').replace('Î', 'I')
				.replace('Ï', 'I').replace('Ó', 'O').replace('Ò', 'O').replace('Ô', 'O').replace('Ö', 'O').replace('Õ', 'O')
				.replace('Ú', 'U').replace('Ù', 'U').replace('Û', 'U').replace('Ü', 'U').replace('Ç', 'C').replace('á', 'a')
				.replace('à', 'a').replace('â', 'a').replace('ä', 'a').replace('ã', 'a').replace('é', 'e').replace('è', 'e')
				.replace('ê', 'e').replace('ë', 'e').replace('í', 'i').replace('ì', 'i').replace('î', 'i').replace('ï', 'i')
				.replace('ó', 'o').replace('ò', 'o').replace('ô', 'o').replace('ö', 'o').replace('õ', 'o').replace('ú', 'u')
				.replace('ù', 'u').replace('û', 'u').replace('ü', 'u').replace('ç', 'c');
	}

import javax.swing.ComboBoxModel;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JLabel;

import javax.swing.WindowConstants;
import org.jdesktop.layout.GroupLayout;
import org.jdesktop.layout.LayoutStyle;

import com.superlocar.view.util.AutoCompletion;

import javax.swing.SwingUtilities;

public class Teste extends javax.swing.JFrame {
	private JComboBox cbxUf;
	private JLabel lblUf;

	/**
	* Auto-generated main method to display this JFrame
	*/
	public static void main(String[] args) {
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				Teste inst = new Teste();
				inst.setLocationRelativeTo(null);
				inst.setVisible(true);
			}
		});
	}
	
	public Teste() {
		super();
		initGUI();
		AutoCompletion.enable(cbxUf); //<== esta linha ativa o autoComplete
		//Ps.: ela podia estar logo apos a definição do cbx
	}
	
	private void initGUI() {
		try {
			GroupLayout thisLayout = new GroupLayout((JComponent)getContentPane());
			getContentPane().setLayout(thisLayout);
			setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
			{
				ComboBoxModel cbxUfModel = 
					new DefaultComboBoxModel(
							new String[] { "Acre","Alagoas","Amazonas","Amapá","Bahia","Ceará","Distrito Federal","Espírito Santo","Goiás","Maranhão","Minas Gerais","Mato Grosso do Sul","Mato Grosso","Pará","Paraíba","Pernambuco","Piauí","Paraná","Rio de Janeiro","Rio Grande do Norte","Rondônia","Roraima","Rio Grande do Sul","Santa Catarina","Sergipe","São Paulo","Tocantins" });
				cbxUf = new JComboBox();
				cbxUf.setModel(cbxUfModel);
				cbxUf.setSelectedIndex(-1);
			}
			{
				lblUf = new JLabel();
				lblUf.setName("lblUf");
				lblUf.setText("UF: ");
			}
				thisLayout.setVerticalGroup(thisLayout.createSequentialGroup()
					.add(7)
					.add(thisLayout.createParallelGroup(GroupLayout.BASELINE)
					    .add(GroupLayout.BASELINE, cbxUf, GroupLayout.PREFERRED_SIZE, 25, GroupLayout.PREFERRED_SIZE)
					    .add(GroupLayout.BASELINE, lblUf, GroupLayout.PREFERRED_SIZE, GroupLayout.PREFERRED_SIZE, GroupLayout.PREFERRED_SIZE))
					.addContainerGap());
				thisLayout.setHorizontalGroup(thisLayout.createSequentialGroup()
					.addContainerGap()
					.add(lblUf, GroupLayout.PREFERRED_SIZE, 34, GroupLayout.PREFERRED_SIZE)
					.addPreferredGap(LayoutStyle.RELATED)
					.add(cbxUf, GroupLayout.PREFERRED_SIZE, 99, GroupLayout.PREFERRED_SIZE)
					.addContainerGap());
			pack();
			this.setTitle("Auto Complete UF");
			this.setSize(250, 78);
			//Application.getInstance().getContext().getResourceMap(getClass()).injectComponents(getContentPane());
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

import java.awt.event.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.text.Collator;
import java.util.Locale;

import javax.swing.*;
import javax.swing.text.*;

/* This work is hereby released into the Public Domain.
* To view a copy of the public domain dedication, visit
* http://creativecommons.org/licenses/publicdomain/
*/
public class AutoCompletion extends PlainDocument {
	private static final long serialVersionUID = 5157735565710292356L;
	JComboBox comboBox;
    ComboBoxModel model;
    JTextComponent editor;
    // flag to indicate if setSelectedItem has been called
    // subsequent calls to remove/insertString should be ignored
    boolean selecting=false;
    boolean hidePopupOnFocusLoss;
    boolean hitBackspace=false;
    boolean hitBackspaceOnSelection;

    KeyListener editorKeyListener;
    FocusListener editorFocusListener;

    public AutoCompletion(final JComboBox comboBox) {
        this.comboBox = comboBox;
        model = comboBox.getModel();
        comboBox.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (!selecting) highlightCompletedText(0);
            }
        });
        comboBox.addPropertyChangeListener(new PropertyChangeListener() {
            @Override
            public void propertyChange(PropertyChangeEvent e) {
                if (e.getPropertyName().equals("editor")) configureEditor((ComboBoxEditor) e.getNewValue());
                if (e.getPropertyName().equals("model")) model = (ComboBoxModel) e.getNewValue();
            }
        });
        editorKeyListener = new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                if (comboBox.isDisplayable()) comboBox.setPopupVisible(true);
                hitBackspace=false;
                switch (e.getKeyCode()) {
                    // determine if the pressed key is backspace (needed by the remove method)
                    case KeyEvent.VK_BACK_SPACE : hitBackspace=true;
                    hitBackspaceOnSelection=editor.getSelectionStart()!=editor.getSelectionEnd();
                    break;
                    // ignore delete key
                    case KeyEvent.VK_DELETE : e.consume();
                    comboBox.getToolkit().beep();
                    break;
                }
            }
        };
        // Bug 5100422 on Java 1.5: Editable JComboBox won't hide popup when tabbing out
        hidePopupOnFocusLoss=System.getProperty("java.version").startsWith("1.5");
        // Highlight whole text when gaining focus
        editorFocusListener = new FocusAdapter() {
            @Override
            public void focusGained(FocusEvent e) {
                highlightCompletedText(0);
            }
            @Override
            public void focusLost(FocusEvent e) {
                // Workaround for Bug 5100422 - Hide Popup on focus loss
                if (hidePopupOnFocusLoss) comboBox.setPopupVisible(false);
            }
        };
        configureEditor(comboBox.getEditor());
        // Handle initially selected object
        Object selected = comboBox.getSelectedItem();
        if (selected!=null) setText(selected.toString());
        highlightCompletedText(0);
    }

    public static void enable(JComboBox comboBox) {
        // has to be editable
        comboBox.setEditable(true);
        // change the editor's document
        new AutoCompletion(comboBox);
    }

    void configureEditor(ComboBoxEditor newEditor) {
        if (editor != null) {
            editor.removeKeyListener(editorKeyListener);
            editor.removeFocusListener(editorFocusListener);
        }

        if (newEditor != null) {
            editor = (JTextComponent) newEditor.getEditorComponent();
            editor.addKeyListener(editorKeyListener);
            editor.addFocusListener(editorFocusListener);
            editor.setDocument(this);
        }
    }

    @Override
    public void remove(int offs, int len) throws BadLocationException {
        // return immediately when selecting an item
        if (selecting) return;
        if (hitBackspace) {
            // user hit backspace => move the selection backwards
            // old item keeps being selected
            if (offs>0) {
                if (hitBackspaceOnSelection) offs--;
            } else {
                // User hit backspace with the cursor positioned on the start => beep
                comboBox.getToolkit().beep(); // when available use: UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
            }
            highlightCompletedText(offs);
        } else {
            super.remove(offs, len);
        }
    }

    @Override
    public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
        // return immediately when selecting an item
        if (selecting) return;
        // insert the string into the document
        super.insertString(offs, str, a);
        // lookup and select a matching item
        Object item = lookupItem(getText(0, getLength()));
        if (item != null) {
            setSelectedItem(item);
        } else {
            // keep old item selected if there is no match
            item = comboBox.getSelectedItem();
            // imitate no insert (later on offs will be incremented by str.length(): selection won't move forward)
            offs = offs-str.length();
            // provide feedback to the user that his input has been received but can not be accepted
            comboBox.getToolkit().beep(); // when available use: UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
        }
        if(item != null)
        	setText(item.toString());
        else 
        	setText("");
        // select the completed part
        highlightCompletedText(offs+str.length());
        	
    }

    private void setText(String text) {
        try {
            // remove all text and insert the completed string
            super.remove(0, getLength());
            super.insertString(0, text, null);
        } catch (BadLocationException e) {
            throw new RuntimeException(e.toString());
        }
    }

    private void highlightCompletedText(int start) {
        editor.setCaretPosition(getLength());
        editor.moveCaretPosition(start);
    }

    private void setSelectedItem(Object item) {
        selecting = true;
        model.setSelectedItem(item);
        selecting = false;
    }

    private Object lookupItem(String pattern) {
    	Object selectedItem = model.getSelectedItem();
    	// only search for a different item if the currently selected does not match
        if (selectedItem != null && startsWithIgnoreAccentsAndCase(selectedItem.toString(), pattern)) {
            return selectedItem;
        } else {
            // iterate over all items
            for (int i=0, n=model.getSize(); i < n; i++) {
                Object currentItem = model.getElementAt(i);
                // current item starts with the pattern?
                if (currentItem != null && startsWithIgnoreAccentsAndCase(currentItem.toString(), pattern)) {
                    return currentItem;
                }
            }
        }
        // no item starts with the pattern => return null
        return null;
    }
    private static Collator collator = null;
	private static Collator getCollator() {
		if (collator == null) {
			collator = Collator.getInstance (new Locale ("pt", "BR"));
			collator.setStrength(Collator.PRIMARY);
		}
		return collator;
	}
	public static boolean startsWithIgnoreAccentsAndCase(String source,String target) {
		if (target.length() > source.length())
			return false;
		return getCollator().compare(source.substring(0, target.length()),target) == 0;
	}
}

File[] arrayContendoOsDiretorios = getDiretorios();//onde getDiretorios é um metodo seu para listar os diretorios

combobox.setModel(new DefaultComboBoxModel(arrayContendoOsDiretorios));

File[] todosOsArquivos = new File(System.getProperty("user.home"))
				.listFiles();
// agora todosOsArquivos contém um array com os arquivos do diretório do usuários
// para criar um combo box bastaria usar: JComboBox combo = new JComboBox(todosOsArquivos);
		for (File f : todosOsArquivos) {
			System.out.println(f.getPath());
		}

AutoCompletion.enable(jcombobox)

jtable.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(jcombobox));