where to store results?

[rahul soni]

see the code DataOnTable.java i writeen my Question?
and what i want




//////////////////////////////////////////////////////////////////////////

import java.awt.*; 
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
import java.sql.*;
 
 
public class DataOnTable extends JFrame
{
String [] columns ={"Client_id","Name","Address","City","State","balance due"};
JTable jtable;
 int k = 0,j = 0, i = 0;
  Object data [][] = new Object[20][6]; 

// Let as see code (line no 13), in this line I've initialized Obj.. array by 20,6,
// buy i don't want this. b/c it causes problem like :- may possible data size of table more/less
// in oracle
// what i want to know.....
// who can i initialized  Obj... array at run time. b/c this making a healthy for machin  
 

public DataOnTable()
{super("");
setSize(400,400);


try
    {
 Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    }catch(ClassNotFoundException inf){System.out.println("Connection "+inf);}

 
try{

Connection con = DriverManager.getConnection("jdbc   :-o	   dbc:rahul","scott","tiger@ora");

Statement st = null;
st = con.createStatement();
ResultSet rs = null;

//while(rs.next()){j++;} Object data [][] = new Object[j][6];
//System.out.print("char"+ j);
rs = st.executeQuery("Select * from client_master");


while(rs.next())
{

data [i][0] = rs.getString(1);
data [i][1] = rs.getString(2);
data [i][2] = rs.getString(3);
data [i][3] = rs.getString(4);
data [i][4] = rs.getString(5);
data [i][5] = rs.getString(6);

i++;



}//end while 
while(rs.next()){k = rs.getRow();
System.out.print("HI\t\n"+ k);}
jtable = new JTable(new newModel(data,columns));
 
}catch(SQLException sql){System.out.println("Hello"+sql.getMessage());}
getContentPane().add(new JScrollPane(jtable));

}//end fun




public static void main(String [] args)
  {
  
DataOnTable D = new DataOnTable();
D.setVisible(true);
String str =System.getProperty("java.ext.dirs");
  
  System.out.print("NOOOO>>>"+str);
}

 
 
 
class newModel extends DefaultTableModel
{
public newModel(Object[][] data,Object[] columns)
{
super(data,columns);
}

public boolean isCellEditable(int row,int col)
{
return false;
}

public Class getColumnClass(int column)
{
Vector V = (Vector) dataVector.elementAt(0);

return  V.elementAt(2).getClass();
}
}
 
}//end class

[edited to add code tags and make subject more descriptive]
[ August 22, 2005: Message edited by: Jeanne Boyarsky ]

[Paul Sturrock]

Use a Collection class (or two), rather than a 2D array. All Collection classes are growable.

[Jeanne Boyarsky]

Rahul,
You should definitely use a collections class like Paul suggeted. For example, an ArrayList. You can always convert back to an array at the end if you need the data in that form.

The ArrayList needs to contain objects. You could use an array of size 6. Even better, you could create a custom object with 6 fields to give them clearer names.