Help to get the column names from ResultSet.

Question

Hi,
I hava a ResultSet and i want the column names into a String Array.
i wrote the code to get the column names as below,
String s = "select Dept_No,Dept_Name from tb_dept";
rs = statement.executeQuery(s); // ResultSet defined before
String[] columnNames1 = null;
ResultSetMetaData meta = rs.getMetaData ( ) ;
for (int x = 1; x <= meta.getColumnCount(); x++)
columnNames1[x] = meta.getColumnName(x).toString();
but i'm getting NullPointer exception. However if i print the column names means its printing the first column name and giving NullPointer Exception at the next step.
Can anyone help me...
Thanks,
Rashmy

Answer 1

but rs.getRow() ll give the current roe no right?
but we can move to the last row using last() method
and get the row count right?
thank you yaar.
private int getRowCount(ResultSet resultSet){
        int total = 0;
        try{
            resultSet.afterLast();
            if(resultSet.previous()) total = resultSet.getRow();
            resultSet.beforeFirst();
        }catch(SQLException sqle){
            javax.swing.JOptionPane.showMessageDialog(null,sqle);
        return total;
    }