In JTable, si ha la
JTable.getSelectedRow()
e
JTable.getSelectedColumn()
si può provare a combinare questo metodo con un due MouseListener e KeyListener. Con il KeyListener si controlla se l'utente preme il tasto CTRL, il che significa che l'utente sta selezionando le cellule, poi con un listener del mouse, per ogni clic si memorizza forse in un vettore o ArrayList le celle selezionate:
//global variables
JTable theTable = new JTable();//your table
boolean pressingCTRL=false;//flag, if pressing CTRL it is true, otherwise it is false.
Vector selectedCells = new Vector<int[]>();//int[]because every entry will store {cellX,cellY}
public void something(){
KeyListener tableKeyListener = new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode()==KeyEvent.VK_CTRL){//check if user is pressing CTRL key
pressingCTRL=true;
}
}
@Override
public void keyReleased(KeyEvent e) {
if(e.getKeyCode()==KeyEvent.VK_CTRL){//check if user released CTRL key
pressingCTRL=false;
}
}
};
MouseListener tableMouseListener = new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if(pressingCTRL){//check if user is pressing CTRL key
int row = theTable.rowAtPoint(e.getPoint());//get mouse-selected row
int col = theTable.columnAtPoint(e.getPoint());//get mouse-selected col
int[] newEntry = new int[]{row,col};//{row,col}=selected cell
if(selectedCells.contains(newEntry)){
//cell was already selected, deselect it
selectedCells.remove(newEntry);
}else{
//cell was not selected
selectedCells.add(newEntry);
}
}
}
};
theTable.addKeyListener(tableKeyListener);
theTable.addMouseListener(tableMouseListener);
}
+1 per l'avvicinamento. – Amarnath