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Highlight specific text in JTextArea - Java

I'm trying to quickly highlight my specific text in JTextArea. The code I need is running too slow, and I would like to know if there is a faster way to highlight text without crashing the whole application.
I have over 5000 words to scroll through and see if there is a need to highlight them or not, but this code doesn't work great for me. I'm looking for a better way to do it. This is my code:
class MyHighlightPainter extends DefaultHighlighter.DefaultHighlightPainter
{
public MyHighlightPainter(Color color) {
super(color);
}
}
Highlighter.HighlightPainter myHighlightPainter = new MyHighlightPainter(Color.yellow);
public void Highligh(JTextComponent textComp, String pattern)
{
try {
Highlighter hilite = textComp.getHighlighter();
Document doc = textComp.getDocument();
String text = doc.getText(0, doc.getLength());
for(int pos = 0; (pos=text.toUpperCase().indexOf(pattern.toUpperCase(),pos))>=0; pos += pattern.length())
hilite.addHighlight(pos, pos+pattern.length(), myHighlightPainter);
} catch (Exception e) {}
}
public void keyReleased(KeyEvent arg0) {
String text = vocabolario.getText();
String[] parziale = new String[5000];
try {
String p1 = "SELECT definizione FROM Cherubini WHERE definizione LIKE '%", p2 = "%';", px = vocabolario.getText(), query = p1+px+p2;
ResultSet rs = Main.conn().createStatement().executeQuery(query);
while(rs.next())
{
String[] dati = { rs.getString("definizione") };
for(int i = 0; i < dati.length; i++) { parziale[i] = dati[i]; textArea.append(parziale[i]+"\n"); }
}
}
catch(SQLException exc) {}
Highligh(textArea,vocabolario.getText());
}
});

for(int pos = 0; (pos=text.toUpperCase().indexOf(pattern.toUpperCase(),pos))>=0; pos += pattern.length())
Why do you keep converting the data to upper case? This should only be done once:
String upperText = text.toUpperCase();
String upperPattern = pattern.toUpperCase();
for(int pos = 0; (pos = upperText.indexOf(upperPattern, pos)) >= 0; pos += pattern.length())

JCheckbox inside a JTable [duplicate]

This question already has an answer here:
Display JCheckBox in JTable
(1 answer)
Closed 6 years ago.
i am create a swing based authentication system and i have a table where i wish to print some necessary details and want the last columnn to have a checkbox. Even after giving a boolean value it is printing true or false rather than a checkbox
controlPanel.removeAll();
System.out.println("coming1");
JournalApprovalClass JAC = new JournalApprovalClass();
JournalApproval JA = new JournalApproval();
String[] columns = { "Author1", "Author2", "Author3",
"Author4", "Author5", "Author6", "Title",
"JournalName", "Scopus", "ImpactFactor",
"JournalMonth", "JournalYear", "NamePublisher",
"VolumeIssuePageNo", "BtechMtech", "OtherDetails",
"Approval" };
System.out.println("coming2");
try {
JA.adminApprovalJournalApproval();
} catch (ClassNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println("coming3");
DefaultTableModel model = new DefaultTableModel(
journalTable.values2, columns);
JTable journalAdminApprovalTable = new JTable(model);
journalAdminApprovalTable
.setPreferredScrollableViewportSize(new Dimension(
1200, 100));
journalAdminApprovalTable.setFillsViewportHeight(true);
TableColumn column = null;
for (int i = 0; i <= 16; i++) {
column = journalAdminApprovalTable.getColumnModel()
.getColumn(i);
column.setPreferredWidth(50);
if (i == 16) {
column.setPreferredWidth(10);
}
}
System.out.println("coming4");
JScrollPane scrollPane = new JScrollPane(
journalAdminApprovalTable);
controlPanel.add(scrollPane);
controlPanel.revalidate();
controlPanel.repaint();
System.out.println("coming5");
This is where i am trying to create to create the table the data object is created in another class
ma.values[0] = au.Author1;
ma.values[1] = au.Author2;
ma.values[2] = au.Author3;
ma.values[3] = au.Author4;
ma.values[4] = au.Author5;
ma.values[5] = au.Author6;
ma.values[6] = au.Title;
ma.values[7] = au.JournalName;
ma.values[8] = au.Scopus;
ma.values[9] = au.ImpactFactor;
ma.values[10] = au.JournalMonth;
ma.values[11] = au.JournalYear;
ma.values[12] = au.NamePublisher;
ma.values[13] = au.VolumeIssuePageNo;
ma.values[14] = au.BtechMtech;
ma.values[15] = au.OtherDetails;
ma.values[16] = new Boolean(true);
/*if (au.AdminApproval == "NO") {
ma.values[16] = new JCheckBox("Approval");
} else
ma.values[16] = new Boolean(true);*/
ma.values1[i] = new Object[17];
ma.values1[i] = ma.values;
System.out.println(ma.values1[i] + " " + ma.values[0] + " "
+ i);
i++;
}
resultSet.next();
}
journalTable.values2 = new Object[i][];
for (int j = 0; j < i; j++)
journalTable.values2[j] = journalTable.values1[j];
return;
Everything is working properly but the thing what i wish for is to have checkbox which is always checked(the reason behind giving true).
when i run the code i get the following output
last column i need a checkbox

It is because your model is operating on String rather than Object. I am not able to run your code, but if I were you I would:
Try to change String[] columns to Object[] columns.
If that
doesn't help, take a look at this

Insert data to MySQL table from JTable in Java GUI

I've made a GUI in Java that connects with a MySQL server and inserts,deletes,updates data. I have a section on this GUI that you can write in a text area a MySQL query and the result is displayed on a Jtable. Everything works fine! I can print the data from the JTable or save them to a text file!
Now, I want to add another feature: When I double click on a specific cell, I would like to change the data of the JTable, and I want this data to be updated in the MySQL table with the click of a button as well.
I've searched all over the internet, but I can't find a good example or a good solution. The JTable I have is dynamic; that means that what ever query is inserted the data will be displayed with the quired column names and data
Here is the code:
ArrayList columnNames = new ArrayList();
ArrayList data = new ArrayList();
data_connector getdata1 = new data_connector();
host = getdata1.getHost();
username = getdata1.getUsername();
password1 = getdata1.getPassword();
mysql_command = getdata1.getMysql_command();
command_name = getdata1.getCommand_name();
setTitle(command_name);
// Connect to an MySQL Database, run query, get result set
String url = "jdbc:mysql://"+host+":3306/xxxxx";
String userid = username;
String password = password1;
String sql = mysql_command;
// Java SE 7 has try-with-resources
// This will ensure that the sql objects are closed when the program
// is finished with them
try (Connection connection = DriverManager.getConnection( url, userid, password );
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery( sql ))
{
ResultSetMetaData md = rs.getMetaData();
int columns = md.getColumnCount();
// Get column names
for (int i = 1; i <= columns; i++)
columnNames.add(md.getColumnName(i));
// Get row data
while (rs.next())
{
ArrayList row = new ArrayList(columns);
for (int i = 1; i <= columns; i++)
row.add(rs.getObject(i));
data.add(row);
}
}
catch (SQLException e)
{
System.out.println(e.getMessage());
JOptionPane.showMessageDialog(null, e.getMessage());
mysql_fail_flag = 1;
}
// Create Vectors and copy over elements from ArrayLists to them
// Vector is deprecated but I am using them in this example to keep
// things simple - the best practice would be to create a custom defined
// class which inherits from the AbstractTableModel class
Vector columnNamesVector = new Vector();
Vector dataVector = new Vector();
for (int i = 0; i < data.size(); i++)
{
ArrayList subArray = (ArrayList)data.get(i);
Vector subVector = new Vector();
for (int j = 0; j < subArray.size(); j++)
subVector.add(subArray.get(j));
dataVector.add(subVector);
}
for (int i = 0; i < columnNames.size(); i++ )
columnNamesVector.add(columnNames.get(i));
contentPane.setLayout(null);
// Create table with database data
table = new JTable(dataVector, columnNamesVector)
{
public Class getColumnClass(int column)
{
for (int row = 0; row < getRowCount(); row++)
{
Object o = getValueAt(row, column);
if (o != null)
return o.getClass();
}
return Object.class;
}
};
// table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
JScrollPane scrollPane = new JScrollPane(table);
scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scrollPane.setBounds(5, 5, xframeWidth-20, yframeHeight-70);
getContentPane().add(scrollPane);
JPanel buttonPanel = new JPanel();
buttonPanel.setBounds(5, 856, 1574, 1);
getContentPane().add(buttonPanel);
buttonPanel.setLayout(null);

In the form you actually create your JTable, I don't think this is easy. What you want to do is subclassing AbstractTableModel, and overwrite the setValueAt() method. You subclass could look like this:
class MyModel extends AbstractTableModel
{
private ResultSet result;
private ResultSetMetaData metadata;
public MyModel (ResultSet rs)
{
super();
result = rs; // mustn't be null, maybe check and throw NPE
metadata = result.getMetaData();
}
public int getRowCount ()
{
result.last();
return result.getRow(); // See http://stackoverflow.com/questions/8292256/get-number-of-rows-returned-by-resultset-in-java
}
public int getColumnCount ()
{
return metadata.getColumnCount();
}
public Object getValueAt (int row, int col)
{
result.absolute(row);
return result.getString(col);
}
public String getColumnName (int col)
{
return metadata.getColumnName(col);
}
public void setValueAt (Object value, int row, int col)
{
result.absolute(row);
result.updateObject(col, value);
}
}
I haven't tested it, but your code must look like this. Note that you mustn't close the Statement, Connection or the ResultSet (or create a new ResultSet cause some db drivers like MySQL destroy the old one) to prevent any Exceptions.

OK!!! i managed to update every cell separately by just editing the cell and then pressing enter!
This works only for 1 table but its ok for my project! Here is the code...
private class RowColumnListSelectionListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
rowIndexStart = table.getSelectedRow();
rowIndexEnd = table.getSelectionModel().getMaxSelectionIndex();
colIndexStart = table.getSelectedColumn();
colIndexEnd = table.getColumnModel().getSelectionModel().getMaxSelectionIndex();
for ( i = rowIndexStart; i <= rowIndexEnd; i++) {
for ( j = colIndexStart; j <= colIndexEnd; j++) {
Object cell_value = table.getValueAt(i,j);
Cell_value_string_before = (String) cell_value;
}
}
}
}
public test_table() {
setIconImage(Toolkit.getDefaultToolkit().getImage(test_table.class.getResource("/com/sun/java/swing/plaf/windows/icons/Computer.gif")));
//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//setBounds(100, 100, 688, 589);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
xframeWidth = screenSize.width; //dynamic size for frame x-axes
yframeHeight = screenSize.height; //dynamic size for frame y-axes
int xlocation = xframeWidth*2; //dynamic location x-axes
int ylocation = yframeHeight*2; //dynamic location y-axes
setBounds(0,0, xframeWidth, yframeHeight);
setResizable(false);
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu mnNewMenu = new JMenu("Αρχείο");
menuBar.add(mnNewMenu);
JMenuItem mntmNewMenuItem_1 = new JMenuItem("Εξαγωγή σε .txt αρχείο");
mntmNewMenuItem_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser fileChooser =new JFileChooser();
fileChooser.setDialogTitle("Δημιουργία αρχείου .txt");
FileNameExtensionFilter filter = new FileNameExtensionFilter(".txt", "text");
fileChooser.setFileFilter(filter);
int returnVal = fileChooser.showSaveDialog(null);
if (returnVal == JFileChooser.APPROVE_OPTION) {
try {
File file = fileChooser.getSelectedFile();
File newfile = new File(file.getPath()+".txt");
// PrintWriter os = new PrintWriter(file);
FileWriter fw = new FileWriter(newfile,true); //filewriter
BufferedWriter bw = new BufferedWriter(fw); //buffered writer
PrintWriter os = new PrintWriter(bw, true);
os.print("");
for (int col = 0; col < table.getColumnCount(); col++) {
os.print(table.getColumnName(col) + "\t");
os.print(";");
}
os.println("");
os.println("");
for (int row = 0; row < table.getRowCount(); row++) {
for (int col = 0; col < table.getColumnCount(); col++) {
//os.print(table.getColumnName(col) + "\t");
// os.print(": ");
os.print(table.getValueAt(row, col) + "\t");
os.print(";");
// os.print(table.getRowCount() + "\t");
}
os.println("");
}
os.close();
System.out.println("Done!");
}
catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
});
mnNewMenu.add(mntmNewMenuItem_1);
JMenuItem mntmNewMenuItem_2 = new JMenuItem("Εκτύπωση");
mntmNewMenuItem_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
if (! table.print()) {
System.err.println("User cancelled printing");
}
} catch (java.awt.print.PrinterException e1) {
System.err.format("Cannot print %s%n", e1.getMessage());
}
}
});
mnNewMenu.add(mntmNewMenuItem_2);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
ArrayList columnNames = new ArrayList();
ArrayList data = new ArrayList();
// data_connector getdata1 = new data_connector();
// host = getdata1.getHost();
// username = getdata1.getUsername();
// password1 = getdata1.getPassword();
// mysql_command = getdata1.getMysql_command();
// command_name = getdata1.getCommand_name();
//setTitle(command_name);
// Connect to an MySQL Database, run query, get result set
String url = "jdbc:mysql://localhost:3306/υπαλληλοι απε-μπε";
String userid = "ziorange";
String password = "120736";
String sql = "SELECT * FROM `ΥΠΑΛΛΗΛΟΙ 2 test`";
//String sql = "SELECT `ΚΩΔΙΚΟΣ`,`ΕΠΩΝΥΜΟ`,`ΟΝΟΜΑ`,`ΟΝΟΜΑ ΠΑΤΡΟΣ`,`ΑΜΚΑ`,`ΑΡΙΘΜΟΣ ΜΗΤΡΩΟΥ ΙΚΑ (αν υπάρχει)` FROM `ΥΠΑΛΛΗΛΟΙ 2` WHERE `ΚΩΔΙΚΟΣ`>'0' AND `ΗΜΕΡΟΜΗΝΙΑ ΑΠΟΧΩΡΗΣΗΣ`>'2009-12-31 00:00:00' OR `ΕΙΔΙΚΟΤΗΤΑ` !='ΑΝΤΑΠΟΚΡΙΤΗΣ ΕΞ' AND `ΛΟΓΟΣ ΑΠΟΧΩΡΗΣΗΣ`='-' ORDER BY `ΕΠΩΝΥΜΟ`";
// Java SE 7 has try-with-resources
// This will ensure that the sql objects are closed when the program
// is finished with them
try
{
connection = DriverManager.getConnection( url, userid, password );
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery( sql );
ResultSetMetaData md = rs.getMetaData();
int columns = md.getColumnCount();
// Get column names
for (int i = 1; i <= columns; i++)
{
columnNames.add( md.getColumnName(i) );
}
// Get row data
while (rs.next())
{
ArrayList row = new ArrayList(columns);
for (int i = 1; i <= columns; i++)
{
row.add( rs.getObject(i) );
}
data.add( row );
}
}
catch (SQLException e)
{
//
System.out.println( e.getMessage() );
JOptionPane.showMessageDialog(null, e.getMessage() );
mysql_fail_flag=1;
}
// Create Vectors and copy over elements from ArrayLists to them
// Vector is deprecated but I am using them in this example to keep
// things simple - the best practice would be to create a custom defined
// class which inherits from the AbstractTableModel class
Vector columnNamesVector = new Vector();
Vector dataVector = new Vector();
for (int i = 0; i < data.size(); i++)
{
ArrayList subArray = (ArrayList)data.get(i);
Vector subVector = new Vector();
for (int j = 0; j < subArray.size(); j++)
{
subVector.add(subArray.get(j));
}
dataVector.add(subVector);
}
for (int i = 0; i < columnNames.size(); i++ )
columnNamesVector.add(columnNames.get(i));
contentPane.setLayout(null);
// Create table with database data
table = new JTable(dataVector, columnNamesVector)
{
public Class getColumnClass(int column)
{
for (int row = 0; row < getRowCount(); row++)
{
Object o = getValueAt(row, column);
if (o != null)
{
return o.getClass();
}
}
return Object.class;
}
};
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.setColumnSelectionAllowed(true); //epilegei to kathe keli ksexwrista
table.getSelectionModel().addListSelectionListener(
new RowColumnListSelectionListener());
table.getDefaultEditor(String.class).addCellEditorListener(
new CellEditorListener() {
public void editingCanceled(ChangeEvent e) {
System.out.println("editingCanceled");
}
public void editingStopped(ChangeEvent e) {
System.out.println("editingStopped: apply additional action");
rowIndexStart = table.getSelectedRow();
rowIndexEnd = table.getSelectionModel().getMaxSelectionIndex();
colIndexStart = table.getSelectedColumn();
colIndexEnd = table.getColumnModel().getSelectionModel().getMaxSelectionIndex();
for ( i = rowIndexStart; i <= rowIndexEnd; i++) {
for ( j = colIndexStart; j <= colIndexEnd; j++) {
Object cell_value = table.getValueAt(i,j);
Cell_value_string_after = (String) cell_value;
ia=i+1;
ja=j+1;
column_name_selected2 = table.getColumnName(ja-1);
}
}
if(Cell_value_string_before.equals(Cell_value_string_after)){
System.out.println("Do nothing");
}
else{
System.out.println("UPDATE DATABASE");
update_database();
}
}
});
JScrollPane scrollPane = new JScrollPane( table );
scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scrollPane.setBounds(5, 5, xframeWidth-20, yframeHeight-70);
getContentPane().add( scrollPane );
JPanel buttonPanel = new JPanel();
buttonPanel.setBounds(5, 856, 1574, 1);
getContentPane().add( buttonPanel );
buttonPanel.setLayout(null);
}
public void update_database(){
Object get_lastname = table.getValueAt(ia-1, 5);
String get_lastname_string = (String) get_lastname;
Object get_name = table.getValueAt(ia-1, 6);
String get_name_string=(String) get_name;
System.out.println("RESULT= "+ column_name_selected2 + " - "+Cell_value_string_after+ " - " + get_lastname_string+ " - " + get_name_string );
if(column_name_selected2.equals("ΕΠΩΝΥΜΟ") || column_name_selected2.equals("ΟΝΟΜΑ")){
JOptionPane.showMessageDialog(null, "To επώνυμο και το όνομα δεν μπορεί να αλλάξει","Μήνυμα:",JOptionPane.WARNING_MESSAGE);
}
else{
try {
PreparedStatement update = (PreparedStatement) connection.prepareStatement
("UPDATE `ΥΠΑΛΛΗΛΟΙ 2 TEST` SET `" +column_name_selected2+"` = ? WHERE ΕΠΩΝΥΜΟ= ? AND ΟΝΟΜΑ =? ");
update.setString(1,Cell_value_string_after);
update.setString(2,get_lastname_string);
update.setString(3,get_name_string);
int all_edit_query_status=update.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}

jTable in GUI (java) does not show all data from database! error in TableModel?

This is a last resort. I'm studying development of Information Systems and even my teachers can't solve this... this is a nut for you to crack!!
This is the problem: My jTable in GUI gives me this:
This is what Microsoft Management Studio shows me:
As you can tell the jTable (GUI) has got 2 main problems:
The columnname "Name" does not contain any information. And it should? Why isn't it showing?
Since as you can tell, the table contains several columns, too many to even show. I therefore want to "add a restriction" that changes so that the jTable only shows the first 6 columns.
This is the code for the "creation of the table", in the DataAccessLayer:
private TableModel getResultSetAsDefaultTableModel(ResultSet rs) {
try {
String[] columnHeadings = new String[0];
Object[][] dataArray = new Object[0][0];
ResultSetMetaData md = rs.getMetaData();
int columnCount = md.getColumnCount();
for (int i = 1; i <= columnCount; i++) {
String columnName = md.getColumnName(i);
columnHeadings = Arrays.copyOf(columnHeadings, columnHeadings.length + 1);
columnHeadings[i - 1] = columnName;
}
int r = 0;
while (rs.next()) {
Object[] row = new Object[columnCount];
for (int i = 1; i <= columnCount; i++) {
row[i - 1] = rs.getObject(i);
}
dataArray = Arrays.copyOf(dataArray, dataArray.length + 1);
dataArray[r] = row;
r++;
}
DefaultTableModel dtm = new DefaultTableModel(dataArray, columnHeadings) {
public boolean isCellEditable(int row, int column) {
return false;
}
};
return dtm;
} catch (SQLException ex) {
Logger.getLogger(Dataaccesslayer.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
If you want me to show you the path of the code (frame, controller) just say so and I'll post it.
I would be so thankful if anyone can solve this...
Regards,
Christian

I think it is because in your for loop it should say i = 0; and not i = 1; since the first information (the name) is at index 0 right ?
In your case it could be enough to just leave the for-loop as it is and change this line to:row[i - 1] = rs.getObject(i-1);
To hide or show columns you could call setMin setMax and setPreferredWidth on your TableColumn.

Change your method like next, I think it helps you:
private TableModel getResultSetAsDefaultTableModel(ResultSet rs) {
try {
List<String> columnHeadings = new ArrayList<String>();
Object[][] dataArray = new Object[0][0];
ResultSetMetaData md = rs.getMetaData();
int columnCount = md.getColumnCount();
for (int i = 1; i <= columnCount; i++) {
columnHeadings.add(md.getColumnName(i));
}
int r = 0;
while (rs.next()) {
Object[] row = new Object[columnCount];
for (int i = 1; i <= columnCount; i++) {
row[i-1] = rs.getObject(i);
}
dataArray = Arrays.copyOf(dataArray, dataArray.length + 1);
dataArray[r] = row;
r++;
}
DefaultTableModel dtm = new DefaultTableModel(dataArray,columnHeadings.toArray(new Object[columnHeadings.size()])) {
public boolean isCellEditable(int row, int column) {
return false;
}
};
return dtm;
} catch (SQLException ex) {
Logger.getLogger(Dataaccesslayer.class.getName()).log(Level.SEVERE,null, ex);
}
return null;
}
For showing not all columns use dtm.setColumnCount(2);. Here 2 is column count to show.

JTable doesn't refresh when my database query is executed

This is a JDBC project. Data from a MySQL database on a WAMP server is displayed in a JTable. I want a user-entered ID on my JSpinner to delete the row with that ID from the table. I made a SQL Query and everything works, but the data on the my JTable doesn't refresh when my query is executed. I click my JNazad button (my back button), and reenter that window so that my JTable shows refreshed data. I don't implemented FireTableModel in my NapraviTablicu method, because its DefaultTableModel, and updates are automatically done with it . I don't know what I did wrong:
public class GUIBDelete extends JFrame{
private SpinnerModel SM;
private JSpinner Spinner;
private JLabel LUnos;
private JButton BNazad, BIzvrsi;
private String ID, SqlQuery;
private Vector NaziviKolona = new Vector();
private Vector Podaci = new Vector();
private JTable Tablica=new JTable();
private JScrollPane ScrollPane;
private DefaultTableModel model;
private JTable NapraviTablicu(){
try {
String SqlQuery = "SELECT * FROM `nfc_baza`";
Podaci.clear();
NaziviKolona.clear();
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://"
+ "localhost:3306/nfc", "root", "");
Statement Stat = con.createStatement();
ResultSet Rez = Stat.executeQuery(SqlQuery);
ResultSetMetaData md = Rez.getMetaData();
int columns = md.getColumnCount();
for (int i = 1; i <= columns; i++) {
NaziviKolona.addElement(md.getColumnName(i));
}
while (Rez.next()) {
Vector red = new Vector(columns);
for (int i = 1; i <= columns; i++) {
red.addElement(Rez.getObject(i));
}
Podaci.addElement(red);
}
Rez.close();
Stat.close();
con.close();
} catch (Exception e) {
System.out.println(e);
}
model = new DefaultTableModel(Podaci, NaziviKolona);
JTable table = new JTable(model);
return table;
}
ActionListener a1 = new ActionListener() {
public void actionPerformed(ActionEvent a) {
dispose();
new GUIIzbornik();
}
};
ActionListener a2 = new ActionListener() {
public void actionPerformed(ActionEvent a) {
ID=null;
SqlQuery = "DELETE FROM `nfc`.`nfc_baza` WHERE `nfc_baza`.`ID` = ";
IzvrsiQuery();
}
private void IzvrsiQuery() {
Object sp = Spinner.getValue();
ID = sp.toString();
SqlQuery=SqlQuery+ID;
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con2 = DriverManager.getConnection(
"jdbc:mysql://" + "localhost:3306/nfc", "root", "");
Statement Stat = con2.createStatement();
int Rez = Stat.executeUpdate(SqlQuery);
Stat.close();
con2.close();
JOptionPane.showMessageDialog(null, "Uspješno izvrseno!",
"Poruka!", JOptionPane.INFORMATION_MESSAGE);
} catch (Exception e) {
System.out.println(e);
}
}
};
GUIBDelete(){
setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
Tablica=NapraviTablicu();
ScrollPane = new JScrollPane(Tablica);
c.fill = GridBagConstraints.BOTH;
c.insets = new Insets(2, 2, 2, 2);
c.weightx = 0.1;
c.weighty = 0.1;
c.gridwidth = 4;
c.gridheight = 2;
c.gridx = 0;
c.gridy = 0;
add(ScrollPane, c);
LUnos= new JLabel("<html><br>Unesite ID elementa</br> kojeg želite obrisati:<html>");
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 1;
c.gridheight = 1;
add(LUnos, c);
SM = new SpinnerNumberModel(1, 1, 1000, 1);
Spinner = new JSpinner(SM);
c.gridx = 2;
c.gridy = 2;
c.gridwidth = 2;
add(Spinner, c);
BNazad = new JButton("Nazad");
c.gridx = 0;
c.gridy = 3;
c.gridwidth = 1;
BNazad.addActionListener(a1);
add(BNazad, c);
BIzvrsi = new JButton("Izvrši");
c.gridx = 2;
c.gridy = 3;
BIzvrsi.addActionListener(a2);
add(BIzvrsi, c);
setSize(400, 500);
setTitle("Brisanje podataka");
setVisible(true);
setLocationRelativeTo(null);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
GUIBDelete i = new GUIBDelete();
}
});
}
}

It looks like you're deleting a row from a database table, and you want the JTable to reflect the change. In izvrsiQuery() update your TableModel and the JTable will update itself. For example,
...
con2.close();
model.removeRow(((Number)(spinner.getValue())).intValue() - 1);
JOptionPane.showMessageDialog(...);
...
Note that row numbers start at 0, and they must be translated when using a RowSorter.
As an aside, your code will be easier for others to read if you use common Java naming conventions and factor out constants.
Addendum: The example just removes a row by number. You'll have to search your TableModel for the row that corresponds to the deleted ID.
Addendum: Although less practical, you may want to refresh the entire table from the database after a DML operation using setModel(), as shown here.