Question

I have populated a JTable from file. After populating data into JTable i can edit the
data but the changes i made to the data are not applied. I want the changes to be applied and later i want to save the updated data into file.

Below is the code to populate the table

ArrayList arrayList1 = new ArrayList();
ArrayList arrayList  = new ArrayList();
reader = new BufferedReader( new InputStreamReader( new FileInputStream( mainpath ) ) );
Map<String, Object[]> result = new LinkedHashMap<String, Object[]>();
int count = 0;
int i = 0;
boolean b = false;
int r1 = rcount - 1;
while( reader.ready() ) {
    String line = reader.readLine();
    if( count == 0 )
        count++;
    else {
        String[] values = line.split( "," );
        String vit = values[0];
        String amt = values[1];
        String rda = values[2];
        String brand = values[3];
        String product = values[4];
        int rcount1 = Integer.parseInt( values[5] );
        if( rcount1 == r1 ) {
            if( result.containsKey( vit ) ) {
                result.clear();
                result.put( vit, new Object[] { b, vit, amt, rda } );
                arrayList = new ArrayList( result.values() );
                for( Object v : arrayList ) {
                    arrayList1.add( v );
                }
            } else {
                if( arrayList.size() > 0 ) {
                    arrayList.clear();
                    result.clear();
                }
                result.put( vit, new Object[] { b, vit, amt, rda } );
                arrayList = new ArrayList( result.values() );
                for( Object v : arrayList ) {
                    arrayList1.add( v );
                }
            }
            combo.setSelectedItem( brand );
            combo1.setSelectedItem( product );
        }
    }
}
jTable3.setModel( new AnimalTableModel( arrayList1 ) );

First column is a checkbox, second col a combobox, third col accepts floats, fourth accepts integers.

Any suggestions would be really helpful….

Thanks in advance

Answer 1

to add an item…

jTable3.getModel().getWhateverFunctionGetsYourArray().add(item);