public class AllContact extends javax.swing.JFrame {

/** Creates new form AllContact */
public AllContact() {
    initComponents();
    try{
        Connection1 con =new Connection1();
        Connection conobj=con.open();
        String stat="select * from contact";
        PreparedStatement pst = conobj.prepareStatement(stat);
        ResultSet rs=pst.executeQuery();
        ResultSetMetaData rsm=rs.getMetaData();
        int rr=0;

        while(rs.next()){
            rr++;
        }int rows=0;
        Object data[][]=new Object[rr][4];
          for(int j=0;rows>0;j++)
        {
             data[j][0]="";
            data[j][1]="";
            data[j][2]="";
            data[j][3]="";

            rows--;
        }
         rs=pst.executeQuery();
         int i=0;
         while(rs.next())
         {
             data[i][0]=rs.getInt(1);
            data[i][1]=rs.getString(2);
            data[i][2]=rs.getString(3);
            data[i][3]=rs.getDate(4);
            i++;

         }
         rows=i;
         jTable1.setModel(new javax.swing.table.DefaultTableModel(
data,
new String [] {
    "name", "num"
}

) { boolean[] canEdit = new boolean [] { false, false };

public boolean isCellEditable(int rowIndex, int columnIndex) {
    return canEdit [columnIndex];
}

});

jTable1.setAutoResizeMode(javax.swing.JTable.AUTORESIZEOFF);

jTable1.getTableHeader().setReorderingAllowed(false);

    }catch(Exception e)
    {

    }
}