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  1. #1
    trollster is offline Member
    Join Date
    Mar 2013
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    Default Not getting the desired row displayed

    I am learning JDBC, completely new to it. I know MySQL very well. I have a search form in my applet (tab 2), where I search for food. And when I click search, I want it to search for the exact food from the Database and return the table contents of that particular row alone. But I am not getting any result. Only an empty frame opens. But when I put the query as "SELECT * FROM table", I am getting the complete table. But I want only one row, the one that is searched for. Can anyone please tell me where I am going wrong? Here's my code:

    Java Code:
    import java.awt.*;
    import java.awt.event.*;
    import java.sql.DriverManager;
    import java.util.Vector;
    import javax.swing.*;
    import com.mysql.jdbc.*;
    public class Tryout extends JFrame  implements ActionListener {
            private static final long serialVersionUID = 1L;
            final Vector columnNames = new Vector();
            final Vector data = new Vector();
            private JTabbedPane tabbedPane = new JTabbedPane();
            private JPanel inputpanel;
            private JPanel searchpanel;
            public String s;
            public Tryout()  {          
                    inputpanel = createPage1();
                    searchpanel = createPage2();
                    tabbedPane.addTab("Input Form", inputpanel);
                    tabbedPane.addTab("Search Form", searchpanel);
                    this.add(tabbedPane, BorderLayout.CENTER);           
            public JPanel createPage1()  {          
                JPanel panel = new JPanel();
                panel.setLayout(new GridBagLayout());
                GridBagConstraints c = new GridBagConstraints();
                //Some code
                return panel;            
            public JPanel createPage2() {      
                    JPanel panel = new JPanel();
                    panel.setLayout(new GridBagLayout());
                    GridBagConstraints c = new GridBagConstraints();
                    c.anchor = GridBagConstraints.LINE_START;
                    c.weightx = 0.5;
                    c.weighty = 0.5;
                    JLabel region = new JLabel("Enter Region"); 
                    c.anchor = GridBagConstraints.FIRST_LINE_START;
                    c.gridx = 0;
                    c.gridy = 0;
                    panel.add(region, c);
                    JTextField field = new JTextField(20);
                    c.anchor = GridBagConstraints.FIRST_LINE_START;
                    c.gridx = 1;
                    c.gridy = 0;
                    panel.add(field, c);
                    JButton search = new JButton("SEARCH");               
                    c.anchor = GridBagConstraints.FIRST_LINE_START;
                    c.gridx = 2;
                    c.gridy = 0;
                    panel.add(search, c);
                    s = field.getText();
                    search.addActionListener(new ActionListener() {
                        public void actionPerformed(ActionEvent ae){
                        Connection con = null;
                        con = (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/delikat", "root", "");
                        Statement st = (Statement) con.createStatement();
                        ResultSet rs= (ResultSet) st.executeQuery("SELECT * FROM delicious WHERE name = "+s+"");
                        ResultSetMetaData md = (ResultSetMetaData) rs.getMetaData();
                        int columns = md.getColumnCount();
                        for (int i = 1; i <= columns; i++) {
                        columnNames.addElement( md.getColumnName(i) );
                        while ( {
                        Vector row = new Vector(columns);
                        for (int i = 1; i <= columns; i++) {
                        row.addElement( rs.getObject(i) );
                        data.addElement( row );
                        catch(Exception e) {}
                        JFrame tab=new JFrame();
                        JTable table = new JTable(data, columnNames);
                        JScrollPane scrollPane = new JScrollPane( table );
                        tab.add( scrollPane );
                    return panel;
            public static void main(String args[]) {
                    SwingUtilities.invokeLater(new Runnable() {
                            public void run() {
                                    Tryout ex = new Tryout();
    My table has the following fields: id, name, category, origin, taste, type.

    Can anyone please check out the code on your comp, try it out and help me with it?


  2. #2
    DarrylBurke's Avatar
    DarrylBurke is offline Forum Police
    Join Date
    Sep 2008
    Madgaon, Goa, India
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    Default Re: Not getting the desired row displayed

    If you're forever cleaning cobwebs, it's time to get rid of the spiders.

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