Most simple code to populate JTable from ResultSet

Question

I googled the whole day and no luck. I call getnPrintAllData() method after pressing OK button. So the code is:

public class DatabaseSQLiteConne         


        

Answer 1

I think this is the Easiest way to populate/model a table with ResultSet.. Download and include rs2xml.jar Get rs2xml.jar in your libraries..

import net.proteanit.sql.DbUtils;

    try
    {
    CreateConnection();
    PreparedStatement st =conn.prepareStatement("Select * from ABC;");
    ResultSet rs = st.executeQuery();
    tblToBeFilled.setModel(DbUtils.resultSetToTableModel(rs));
    conn.close();
    }
    catch(Exception ex)
    {
    JOptionPane.showMessageDialog(null, ex.toString());
    }

Answer 2

This is my approach:

String[] columnNames = {"id", "Nome", "Sobrenome","Email"};

List<Student> students = _repo.getAll();

Object[][] data = new Object[students.size()][4];

int index = 0;
for(Student s : students) {
    data[index][0] = s.getId();
    data[index][1] = s.getFirstName();
    data[index][2] = s.getLastName();
    data[index][3] = s.getEmail();
    index++;
}

DefaultTableModel model = new DefaultTableModel(data, columnNames);

table = new JTable(model);

Answer 3

You have to Download the Jar called rs2xml by click this link rs2xml.jar Then Add it to your project libraries then import

import net.proteanit.sql.DbUtils;

I prepare Only a method to do so as a sample

private void Update_table(){
    try{
        // fetch a connection
        connection = your_connection_class_name_here.getInstance().getConnection();
        if (connection != null) {
        String sql="select name,description  from sell_mode";
        pst=connection.prepareStatement(sql);
        rs=pst.executeQuery();
         your_table_name_for_populating_your_Data.setModel(DbUtils.resultSetToTableModel(rs));
        }
    }
    catch(IOException | SQLException | PropertyVetoException e){
    JOptionPane.showMessageDialog(null,e);
    }
    finally {
          if (rs!= null) try { rs.close(); } catch (SQLException e) {}
          if (pst != null) try { pst.close(); } catch (SQLException e) {}
          if (connection != null) try { connection.close(); } catch (SQLException e) {}
      }
}

Hope this will help more

Answer 4

The JTable constructor accepts two arguments 2dimension Object Array for the data, and String Array for the column names.

eg:

import java.awt.BorderLayout;
import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;

public class Test6 extends JFrame {

    public Test6(){     
        this.setSize(300,300);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Mpanel m = new Mpanel();
        this.add(m,BorderLayout.CENTER);        
    }


    class Mpanel extends JPanel {       

        JTable mTable;
        private Object[][] cells = {{"Vivek",10.00},{"Vishal",20.00}};
        private String[] columnNames = { "Planet", "Radius" };
        JScrollPane mScroll;

        public Mpanel(){
            this.setSize(150,150);
            this.setComponent();
        }

        public void setComponent(){
            mTable = new JTable(cells,columnNames);
            mTable.setAutoCreateRowSorter(true);
            mScroll = new JScrollPane(mTable);

            this.add(mScroll);
        }
    }

    public static void main(String[] args){     
        new Test6().setVisible(true);
    }
}