Nie wiem co masz na myśli. Oto kod, który wydaje się działać tak, jak określasz, ale oprócz wyrzucenia dowolnej liczby zbędnych lub błędnych stwierdzeń, jest to prawie to, co napisałeś.
/*
<applet code='inv' width='200' height='200'>
</applet>
*/
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;
import javax.swing.*;
public class inv extends JApplet { //implements MouseListener {
JList listbox;
public void init()
{
String listData[] = { "Item 1","Item 2","Item 3","Item 4" };
listbox = new JList(listData);
listbox.addMouseListener(new MouseAdapter()
{
public void mousePressed(MouseEvent e)
{
System.out.println(e);
if (SwingUtilities.isRightMouseButton(e))
{
System.out.println("Row: " + getRow(e.getPoint()));
listbox.setSelectedIndex(getRow(e.getPoint()));
}
}
});
listbox.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
add(listbox);
// unnecessary
//listbox.setVisible(true);
listbox.setFocusable(false);
}
private int getRow(Point point)
{
return listbox.locationToIndex(point);
}
/** Why implement MouseListener, while adding a MouseAdapter?
Do you have ANY idea what your doing?
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
}
*/
/** What is this nonsense supposed to achieve?
Don't override empty methods with empty implementations!
public void stop()
{
}
*/
/** What is this nonsense supposed to achieve?
public void paint(Graphics g)
{
}
*/
}
Wyjście
java.awt.event.MouseEvent[MOUSE_PRESSED,(31,22),absolute(39,72),button=3,modifiers=Meta+Button3,extModifiers=Button3,clickCount=1] on javax.swing.JList[,0,0,200x200,alignmentX=0.0,alignmentY=0.0,border=,flags=50331944,maximumSize=,minimumSize=,preferredSize=,fixedCellHeight=-1,fixedCellWidth=-1,horizontalScrollIncrement=-1,selectionBackground=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],selectionForeground=sun.swing.PrintColorUIResource[r=51,g=51,b=51],visibleRowCount=8,layoutOrientation=0]
Row: 1
java.awt.event.MouseEvent[MOUSE_PRESSED,(29,39),absolute(37,89),button=3,modifiers=Meta+Button3,extModifiers=Button3,clickCount=1] on javax.swing.JList[,0,0,200x200,alignmentX=0.0,alignmentY=0.0,border=,flags=50331944,maximumSize=,minimumSize=,preferredSize=,fixedCellHeight=-1,fixedCellWidth=-1,horizontalScrollIncrement=-1,selectionBackground=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],selectionForeground=sun.swing.PrintColorUIResource[r=51,g=51,b=51],visibleRowCount=8,layoutOrientation=0]
Row: 2
java.awt.event.MouseEvent[MOUSE_PRESSED,(36,65),absolute(468,192),button=3,modifiers=Meta+Button3,extModifiers=Button3,clickCount=1] on javax.swing.JList[,0,0,200x200,alignmentX=0.0,alignmentY=0.0,border=,flags=50331944,maximumSize=,minimumSize=,preferredSize=,fixedCellHeight=-1,fixedCellWidth=-1,horizontalScrollIncrement=-1,selectionBackground=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],selectionForeground=sun.swing.PrintColorUIResource[r=51,g=51,b=51],visibleRowCount=8,layoutOrientation=0]
Row: 3
java.awt.event.MouseEvent[MOUSE_PRESSED,(45,11),absolute(477,138),button=3,modifiers=Meta+Button3,extModifiers=Button3,clickCount=1] on javax.swing.JList[,0,0,200x200,alignmentX=0.0,alignmentY=0.0,border=,flags=50331944,maximumSize=,minimumSize=,preferredSize=,fixedCellHeight=-1,fixedCellWidth=-1,horizontalScrollIncrement=-1,selectionBackground=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],selectionForeground=sun.swing.PrintColorUIResource[r=51,g=51,b=51],visibleRowCount=8,layoutOrientation=0]
Row: 0
Tool completed successfully
Przepraszam za wszystkie moje bzdury. Tak właśnie mnie uczono. (klasa liceum) – nn2
Proszę [zaakceptuj odpowiedź] (http://meta.stackexchange.com/a/5235/155831), jeśli pomogło rozwiązać problem. –