Mukesh

[Mukesh Pandit]

Hello!
I have a table that contains the details of a patient. But when I restart the program next time, it does not store any information.
Please tell me how to make the program to store the data next time I restart the same program.
I am sending the code.
import javax.swing.table.AbstractTableModel;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
class PATIENT
{
private String name, age, sex;
public PATIENT(String name)
{
setName(name);
age = "";
sex = "";
}
public PATIENT()
{
this("");
}
public void setName(String name) { this.name = name; }
public void setAge(String age) { this.age = age; }
public void setSex(String sex) { this.sex = sex; }

public String getName() { return name; }
public String getAge() { return age; }
public String getSex() { return sex; }

public String toString()
{
return name;
}
}
class myModel extends AbstractTableModel
{
private PATIENT patient;
private String row_names[] = { "NAME", "AGE", "SEX" };
private String column_names[] = {"PARAMETERS","VALUES"};
public myModel()
{
super();
patient = new PATIENT("");
}
public void setPATIENT(PATIENT p)
{
patient = p;
fireTableDataChanged();
}
public PATIENT getPATIENT()
{
return patient;
}
public String getColumnName( int col )
{
return column_names[col];
}
public int getColumnCount( )
{
return column_names.length;
}
public int getRowCount( )
{
return row_names.length;
}
public void setValueAt(Object value, int row, int col)
{
if (col > 0)
{
String newValue = (String) value;
switch (row)
{
case 0 : patient.setName(newValue); break;
case 1 : patient.setAge(newValue); break;
case 2 : patient.setSex(newValue); break;
}
}
}
public Object getValueAt(int row, int col)
{
if (col == 0)
{
return row_names[row];
}
else
{
switch (row)
{
case 0 : return patient.getName();
case 1 : return patient.getAge();
case 2 : return patient.getSex();
default : return "";
}
}
}
public Class getColumnClass(int c)
{
return getValueAt(0, c).getClass();
}
public boolean isCellEditable(int row, int col)
{
if (col == 0)
return false;
else
return true;
}
}
public class PERSON_TABLE extends JFrame implements ActionListener
{
myModel tmodel = new myModel();
JTable table = new JTable( tmodel );
JButton enter_info = new JButton( "Enter info" ),
update_info = new JButton( "Update info" ),
save_info = new JButton( "save info" ),
print_info = new JButton( "print info" );
JPanel panel = new JPanel( );
DefaultListModel m = new DefaultListModel( );
JList list = new JList( m );
PERSON_TABLE( )
{
super( "table of patients" );
PATIENT mukesh = new PATIENT("Mukesh");
m.addElement(mukesh);
panel .add( enter_info );
panel .add( update_info );
enter_info .addActionListener( this );
update_info .addActionListener( this );
getContentPane( ).add( new JScrollPane( list ), BorderLayout.CENTER);
getContentPane( ).add( panel, BorderLayout.SOUTH );
setDefaultCloseOperation( EXIT_ON_CLOSE );
pack( );
show( );
}
public void actionPerformed(ActionEvent e)
{
if( e.getSource( ) == enter_info )
{

PATIENT p = new PATIENT();
m.addElement(p);
tmodel.setPATIENT(p);

JPanel option_panel = new JPanel( );
option_panel.add( save_info );
option_panel.add( print_info );
save_info.addActionListener( this );
print_info.addActionListener( this );
JFrame frame = new JFrame( m.getElementAt( list.getSelectedIndex( )).toString( ));
frame . getContentPane( ).add( new JScrollPane( new JTable( tmodel )), BorderLayout.CENTER );
frame . getContentPane( ).add( option_panel, BorderLayout.SOUTH );
frame . setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
frame . pack( );
frame . show( );
}
if( e.getSource( ) == save_info )
{
PATIENT p = tmodel.getPATIENT();
int index = m.indexOf(p);
m.setElementAt(p, index);
}

if( e.getSource( ) == update_info )
{
if (list.getSelectedIndex() != -1)
{
PATIENT p = (PATIENT) m.getElementAt( list.getSelectedIndex() );
tmodel.setPATIENT(p);
JPanel option_panel = new JPanel( );
option_panel.add( save_info );
option_panel.add( print_info );
save_info.addActionListener( this );
print_info.addActionListener( this );
JFrame frame = new JFrame( m.getElementAt( list.getSelectedIndex( )).toString( ));
frame . getContentPane( ).add( new JScrollPane( new JTable( tmodel )), BorderLayout.CENTER );
frame . getContentPane( ).add( option_panel, BorderLayout.SOUTH );
frame . setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
frame . pack( );
frame . show( );

}
}
}
public static void main( String s[] )
{
new PERSON_TABLE( );
}
}
< end of code >

[Younes Essouabni]

If you need persistance information, you should serialize it. IMHO, the better way is to make a connection to a DB.
You may create easily a db with access and then connect to it via trough ODBC.

Hope it helps you!