Re: jlist
dario.8282@hotmail.it wrote:
i have a jlist; i put in a vector of string
Vector v_righe = new Vector();
JList list_righe = new JList(v_righe);
i select an element of the jlist with the mouse
i would like to deselect the element push a button...
i call
list_righe.clearSelection();
...that cause the exception:
Exception in thread "AWT-EventQueue-1"
java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.get(Vector.java:696)
i have tried to do these controls...
if(v_righe.size()>0){
if(!list_righe.isSelectionEmpty())
list_righe.clearSelection();
}
but it's the same...
what's the problem?
thank's!
It works just fine for me.
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
public class test2 {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Vector v = new Vector();
v.add("One");
v.add("Two");
v.add("Three");
final JList l = new JList(v);
f.add(l,BorderLayout.CENTER);
JButton b = new JButton("Clear Selection");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
l.clearSelection();
}
});
f.add(b,BorderLayout.SOUTH);
f.pack();
f.setVisible(true);
}
});
}
}
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