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Array out of bounds when getting column and row selection?

I am trying to get what column and row are selected on a JTable using a clicked Event, but its telling me this - "java.lang.ArrayIndexOutOfBoundsException:-1"
Here is my JTable:
DefaultTableModel tabelaPrs = new DefaultTableModel (null, new String[] {"DATA","EXERCICIO","PESO","NÚMERO DE REPETIÇÕES"});
JTable jtPrs = new JTable(tabelaPrs);
jtPrs.setEnabled(false);
JScrollPane jspPrs= new JScrollPane(jtPrs);
jspPrs.setEnabled(false);
jspPrs.setBounds(55,88,639,567);
jspPrs.setPreferredSize(new Dimension(475,125));
contentPane.add(jspPrs);
My try catch to give the JTable the data from sql:
try
{
java.sql.Statement stmt;
ResultSet rs;
String sql = "SELECT * FROM prs ORDER BY data";
int i = 0;
String [] campos = new String [] {null, null, null,null};
LigacaoBD obterLigacao = new LigacaoBD();
Connection con = (Connection) obterLigacao.OL();
stmt = con.createStatement();
rs = stmt.executeQuery(sql);
while (rs.next())
{
tabelaPrs.addRow(campos);
tabelaPrs.setValueAt(rs.getString("data"), i, 0);
tabelaPrs.setValueAt(rs.getString("exercicio"), i, 1);
tabelaPrs.setValueAt(rs.getString("peso"), i, 2);
tabelaPrs.setValueAt(rs.getString("num_reps"), i,3);
i++;
}
obterLigacao.FecharLigacao(con);
}
catch (SQLException sqle)
{
JOptionPane.showMessageDialog(null, "Não foi possivel efetuar a operação na BD." + sqle.getMessage());
}
Here is my Mouse Clicked Event:
jtPrs.addMouseListener(new MouseAdapter() {
#Override
public void mouseClicked(MouseEvent e) {
int r = jtPrs.getSelectedRow();
getData = tabelaPrs.getValueAt(r, 1).toString();
getExercicio = tabelaPrs.getValueAt(r, 2).toString();
getPeso = tabelaPrs.getValueAt(r, 3).toString();
getRepetições = tabelaPrs.getValueAt(r, 4).toString();
}
});

Looking at the JavaDocs for JTable, the method JTable.getSelectedRow() returns -1 if no row is selected.
int r = jtPrs.getSelectedRow();
getData = tabelaPrs.getValueAt(r, 1).toString();
You then attempt to use the retrieved value with the JTable, which probably caused the ArrayOutOfBoundsException.
The obvious solution is to make sure a row is selected when that Event is called, so that -1 won't be returned. See this for some details about selecting a row.

I need to fix my update to the dynamic jTable by a search in my Access database

I have a problem in updating my single jtable from Microsoft Access Database.
I do not have any error messages. I tried out the Query for the database using like, but my jtable does not populate in relation to the data stored in the database.
public TableModel setAuthorSearchEjournalTableValues(){
String eJournalAuthor = jTextField30.getText();
ResultSet tableData = DCE.searchEjournalbyAuthor(eJournalAuthor);
try {
ResultSetMetaData md = tableData.getMetaData();
int columnCount = md.getColumnCount();
Vector columns = new Vector(columnCount);
for (int i = 1; i <= columnCount; i++) {
columns.add(md.getColumnName(i));
}
Vector data = new Vector();
Vector row;
while (tableData.next()) {
row = new Vector(columnCount);
for (int i = 1; i <= columnCount; i++) {
row.addElement( tableData.getString(i) );
}
data.add(row);
}
DefaultTableModel tableModel = new DefaultTableModel(data, columns);
return tableModel;
//Debugging
} catch (SQLException ex) {
ex.printStackTrace();
}
return null;
}`
And my result retrieving query is here
public ResultSet searchEjournalbyAuthor(String author){
conn = Connect();
try{
String myQuery = "select AuthorDetails,Year,Titleofarticle,Journaltitle,volume,pagenumbers,URL,AccessedDate from Ejournalcitation where AuthorDetails = '"+author+"'";
pst = conn.prepareStatement(myQuery);
rs = pst.executeQuery();
return rs;
}catch(SQLException ex){
ex.printStackTrace();
}
return null;
}
with the code to display as
private void jTextField30KeyReleased(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
if(jComboBox1.getSelectedIndex()==0&&jComboBox2.getSelectedIndex()==0){//BookTitle
jTable1.setModel(setTitleSearchBookTableValues());
}
else if(jComboBox1.getSelectedIndex()==0&&jComboBox2.getSelectedIndex()==1){//BookAuthor
jTable1.setModel(setAuthorSearchBookTableValues());
}
else if(jComboBox1.getSelectedIndex()==1&&jComboBox2.getSelectedIndex()==0){//WebSiteTitle
jTable1.setModel(setTitleSearchWebSiteTableValues());
}
else if(jComboBox1.getSelectedIndex()==1&&jComboBox2.getSelectedIndex()==1){//WebSiteAuthor
jTable1.setModel(setAuthorSearchWebSiteTableValues());
}
else if(jComboBox1.getSelectedIndex()==2&&jComboBox2.getSelectedIndex()==0){//Ejournaltitle
jTable1.setModel(setTitleSearchEjournalTableValues());
}
else if(jComboBox1.getSelectedIndex()==3&&jComboBox2.getSelectedIndex()==1){//EjournalAuthor
jTable1.setModel(setAuthorSearchEjournalTableValues());
}
else{
JOptionPane.showMessageDialog(null, "Please enter a value and select the type of search");
}
}
Help me out!! Thanks in advance

you must include
DefaultTableModel tableModel = (DefaultTableModel) jTable1.getModel();
tableModel.fireTableDataChanged();
with the corrected query
String myQuery = "select AuthorDetails,Year,Titleofarticle,Journaltitle,volume,pagenumbers,URL,AccessedDate from Ejournalcitation where AuthorDetails like '%"+author+"%'";

Using JTables in netbeans

I want to display the data out of my result set into a JTable.
When I run the following code the table doesn't update.
public void getHouses(int price) {
Connection conn;
ArrayList<Integer> ID = new ArrayList<Integer>();
ArrayList<String> Price = new ArrayList<String>();
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
conn = DriverManager.getConnection("jdbc:odbc:Houses");
Statement statement = conn.createStatement();
ResultSet rec = statement.executeQuery("SELECT * FROM Houses WHERE Price <= " + price + "");
while (rec.next()) {
ID.add(rec.getInt("ID"));
Price.add(rec.getString("Price"));
}
String[] columnNames = {"House ID", "House Price"};
Object[][] rows = new Object[ID.size()][2];
for (int i = 0; i < ID.size(); i++) {
rows[i][0] = ID.get(i);
rows[i][1] = Price.get(i);
}
jTable1 = new JTable(rows, columnNames);
statement.close();
} catch (SQLException se) {
} catch (ClassNotFoundException cnf) {}
}
NOTE!
I added the JTable to the gui by drag and drop.
I also tested that my resultset has the data in it.

You need to learn about OP Swing MVC pattern, you need to declare a TableModel which your data store then set it to your table, like:
TableModel myData = new DefaultTableModel(columnVector, dataVector);
jTable1.setModel(myData);
Read more about DefaultTableModel

JComboBox populates every time it is clicked

I am trying to populate a JComboBox with data from a database which I have managed to do. The problem is, it populates every time an entry is selected. How do I solve this, I need it to populate once.
public void writeSku() {
try{
Class.forName(dbClass);
connection = DriverManager.getConnection(dbUrl);
state = (Statement) connection.createStatement();
String query2 = "SELECT sku FROM drugs";
result = state.executeQuery(query2);
ResultSetMetaData meta = (ResultSetMetaData) result.getMetaData();
int columns = meta.getColumnCount();
while(result.next()){
for(int i =1; i<=columns; i++){
String skuValue = result.getString(i);
skuCombo4.addItem(skuValue);
}
}
} catch(ClassNotFoundException | SQLException ex){
JOptionPane.showMessageDialog(null,"Error"+ex);
}
}

SELECT statement in JAVA

public void search() throws Exception{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:******";
String user = "*****";
String pass = "*****";
Connection con = DriverManager.getConnection(url, user, pass);
Statement state = con.createStatement();
ResultSet rs = state.executeQuery("");
ResultSetMetaData rsmetadata = rs.getMetaData();
int columns = rsmetadata.getColumnCount();
DefaultTableModel dtm = new DefaultTableModel();
Vector column_name = new Vector();
Vector data_rows = new Vector();
for (int i=1; i<columns;i++){
column_name.addElement(rsmetadata.getColumnName(i));
}
dtm.setColumnIdentifiers(column_name);
while(rs.next()){
data_rows = new Vector();
for (int j=1; j<columns; j++){
data_rows.addElement(rs.getString(j));
}
dtm.addRow(data_rows);
}
tblPatient.setModel(dtm);
}
On my ResultSet rs = state.executeQuery() I used this SQL
"SELECT "
+ "pIDNo AS 'Patient ID',"
+ "pLName AS 'Last Name',"
+ "pFName AS 'First Name',"
+ "pMI AS 'M.I.',"
+ "pSex AS 'Sex',"
+ "pStatus AS 'Status',"
+ "pTelNo AS 'Contact No.',"
+ "pDocID AS 'Doctor ID',"
+ "pAddr AS 'St. No.',"
+ "pStreet AS 'St. Name',"
+ "pBarangay AS 'Barangay',"
+ "pCity AS 'City',"
+ " pProvince AS 'Province',"
+ " pLNameKIN AS 'Last Name',"
+ "pFNameKIN AS 'First Name',"
+ "pMIKIN AS 'M.I.',"
+ "pRelationKIN AS 'Relation',"
+ "pTotalDue AS 'Total Due'"
+ " FROM dbo.Patients");
First I run this line (pTotalDue didn't come up to jTable.)
And on my second attempt to display it I do this:
"SELECT pTotalDue AS 'Total Due' FROM dbo.Patients"
Now I tried this one, and I think something's really wrong about my codes. BTW this column has MONEY DATA TYPE
why does it didn't show to my JTable? could anyone tell me what is the problem with my codes?
(Problem in the answer that has given to me)
public class QueryOnWorkerThread extends SwingWorker{
private final JTable tableToUpdate;
public QueryOnWorkerThread( JTable aTableToUpdate ) {
tableToUpdate = aTableToUpdate;
}
#Override
protected TableModel doInBackground() throws Exception {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:OJT_dsn";
String user = "sa";
String pass = "";
Connection con = DriverManager.getConnection( url, user, pass );
Statement state = con.createStatement();
ResultSet rs = state.executeQuery("");
ResultSetMetaData rsmetadata = rs.getMetaData();
int columns = rsmetadata.getColumnCount();
DefaultTableModel dtm = new DefaultTableModel();
Vector column_name = new Vector();
Vector data_rows;
//note the <= check iso the < check (as the count starts at index 1)
for (int i=1; i<=columns;i++){
column_name.addElement(rsmetadata.getColumnName(i));
}
dtm.setColumnIdentifiers(column_name);
while(rs.next()){
data_rows = new Vector();
//note the <= check iso the < check (as the count starts at index 1)
for (int j=1; j<=columns; j++){
data_rows.addElement(rs.getString(j));
}
dtm.addRow(data_rows);
}
return dtm;
}
`#Override <<<<<<<<<<<<<<<<<<<<< I have a problem here it says : done() in javaapplication25.SearchPatient.QueryWorkerThread cannot override done() in javax.swing.SwingWorker overriden method does not throw java.lang.Exception , what does it mean sir?`
protected void done() throws Exception{
//this method runs on the EDT, so it is safe to update our table here
try {
tableToUpdate.setModel( get() );
} catch ( InterruptedException e ) {
throw new RuntimeException( e );
} catch ( ExecutionException e ) {
throw new RuntimeException( e );
}
}

try this
DefaultTableModel dtm=(DefaultTableModel)table.getModel();
for (int i = dtm.getRowCount() - 1; i > -1; i--) {
dtm.removeRow(i);
}
Connection con = DriverManager.getConnection(url, user, pass);
Statement state = con.createStatement();
ResultSet rs = state.executeQuery("Your SQL Query");
while(rs.next())
{
String str1=rs.getString(1);
String str2=rs.getString(2);
String str3=rs.getString(3);
String str4=rs.getString(4);
String str5=rs.getString(5);
:
:
:
dtm.addRow(new Object[]{str1,str2,str3,str4,str5});
}

In you loops, your exit condition is
j<columns
this means thant the last column will never be recovered. try this insted:
for (int j=1; j<=columns; j++)

The fact that your last column does not appear is probably related to your loop statements, as already indicated by #Joan.
There are however more issues with this code. You should only update Swing components on the Event Dispatch Thread, and on that Thread you should not perform long running operations. In short, mixing SQL queries and updates of the JTable should not happen on the same thread. Consult the Concurrency in Swing guide for more info.
Using a SwingWorker could solve this issue:
public class QueryOnWorkerThread extends SwingWorker<TableModel, Void>{
private final JTable tableToUpdate;
public QueryOnWorkerThread( JTable aTableToUpdate ) {
tableToUpdate = aTableToUpdate;
}
#Override
protected TableModel doInBackground() throws Exception {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:******";
String user = "*****";
String pass = "*****";
Connection con = DriverManager.getConnection( url, user, pass );
Statement state = con.createStatement();
ResultSet rs = state.executeQuery("");
ResultSetMetaData rsmetadata = rs.getMetaData();
int columns = rsmetadata.getColumnCount();
DefaultTableModel dtm = new DefaultTableModel();
Vector column_name = new Vector();
Vector data_rows;
//note the <= check iso the < check (as the count starts at index 1)
for (int i=1; i<=columns;i++){
column_name.addElement(rsmetadata.getColumnName(i));
}
dtm.setColumnIdentifiers(column_name);
while(rs.next()){
data_rows = new Vector();
//note the <= check iso the < check (as the count starts at index 1)
for (int j=1; j<=columns; j++){
data_rows.addElement(rs.getString(j));
}
dtm.addRow(data_rows);
}
return dtm;
}
#Override
protected void done() {
//this method runs on the EDT, so it is safe to update our table here
try {
tableToUpdate.setModel( get() );
} catch ( InterruptedException e ) {
throw new RuntimeException( e );
} catch ( ExecutionException e ) {
throw new RuntimeException( e );
}
}
}
The SwingWorker can be started by calling
QueryOnWorkerThread worker = new QueryOnWorkerThread( tblPatient );
worker.execute();
Note how I changed the loops in your code

Try getting that column via ResultSet.getBigDecimal() rather than via ResultSet.getString(). Then put your retrieved BigDecimal.toPlainString() into your table cell.
Example:
data_rows.addElement(rs.getBigDecimal("pTotalDue").toPlainString());//Assuming your select returns a pTotalDue Column (e.g. SELECT pTotalDue,... FROM ...)

Try to Use an TableCellRenderer.
Implement the Renderer and render the Column with the Money Type in the form you wish.
Regards,
HL