Hi I have to pick an element from a JList to another, removing it from the first The method I've created inserts only one element, overwriting the last one and doesn't remove the selected item from the first JList Here's the code:
First list
private javax.swing.JList listaRosa;
Populated by this method:
private void visualizzaRosaButtonvisualizzaRosa(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
visualizzaSquadraSelezionata();
String fileSquadra;
fileSquadra = squadraDaVisualizzare.getText();
DefaultListModel listModel = new DefaultListModel();
try {
FileInputStream fstream = new FileInputStream("C:/Users/Franky/Documents/NetBeansProjects/JavaApplication5/src/javaapplication5/Rose/"+fileSquadra+"");
// Get the object of DataInputStream
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
//Read File Line By Line
while ((strLine = br.readLine()) != null) {
listModel.addElement(strLine);
System.out.println(strLine);
}
listaRosa.setModel(listModel);
//Close the input stream
in.close();
} catch (Exception e) {
}
The second list, where I want to insert items removing from the first:
private javax.swing.JList listaTitolari
Here's the NOT working code:
private void aggiungiTitolareButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
DefaultListModel listModel = new DefaultListModel();
String daInserire;
listModel.addElement(listaRosa.getSelectedValue());
listModel.removeElement(listaRosa.getSelectedValue());
listaTitolari.setModel(listModel);
}
Thanks
The problem is
listModel.addElement(listaRosa.getSelectedValue());
listModel.removeElement(listaRosa.getSelectedValue());
you may be adding an element and immediatly removing it since both add and remove operations are on the same listModel.
Try
private void aggiungiTitolareButtonActionPerformed(java.awt.event.ActionEvent evt) {
DefaultListModel lm2 = (DefaultListModel) listaTitolari.getModel();
DefaultListModel lm1 = (DefaultListModel) listaRosa.getModel();
if(lm2 == null)
{
lm2 = new DefaultListModel();
listaTitolari.setModel(lm2);
}
lm2.addElement(listaTitolari.getSelectedValue());
lm1.removeElement(listaTitolari.getSelectedValue());
}