Example usage for javax.swing JList getSelectedIndex

Introduction

In this page you can find the example usage for javax.swing JList getSelectedIndex.

Prototype

public int getSelectedIndex() 

Source Link

Document

Returns the smallest selected cell index; the selection when only a single item is selected in the list.

Usage

From source file:Main.java

public static void main(String[] args) {
    String[] items = { "item1", "item2", "item1" };
    JList<String> list = new JList<>(items);
    JTextField output = new JTextField(15);
    JPanel gui = new JPanel();
    gui.add(list);//from w w  w.  j a  v a  2  s .co  m
    gui.add(output);
    list.addListSelectionListener(new ListSelectionListener() {
        public void valueChanged(ListSelectionEvent lse) {
            int index = list.getSelectedIndex();
            String outputText = "Index: " + index + "  Value: " + items[index];
            output.setText(outputText);
        }
    });
    JOptionPane.showMessageDialog(null, gui);
}

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From source file:Main.java

public static void main(final String args[]) {
    final String labels[] = { "A", "B", "C", "D", "E" };
    JFrame frame = new JFrame("Selecting JList");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final JList jlist = new JList(labels);
    JScrollPane scrollPane1 = new JScrollPane(jlist);
    frame.add(scrollPane1);//from w ww .  ja v  a  2s .co m

    ListSelectionListener listSelectionListener = new ListSelectionListener() {
        public void valueChanged(ListSelectionEvent listSelectionEvent) {
            System.out.println(jlist.getSelectedIndex());
        }
    };
    jlist.addListSelectionListener(listSelectionListener);

    frame.setSize(350, 200);
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    String[] items = { "A", "B", "C", "D" };
    JList list = new JList(items);
    // Get the index of all the selected items
    int[] selectedIx = list.getSelectedIndices();

    // Get all the selected items using the indices
    for (int i = 0; i < selectedIx.length; i++) {
        Object sel = list.getModel().getElementAt(selectedIx[i]);
    }/*from  w w w.  j av a2s  .  c o m*/

    // Get the index of the first selected item
    int firstSelIx = list.getSelectedIndex();

}

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From source file:Main.java

public static void addDoubleClickEvent(JList list) {
    list.addMouseListener(new MouseAdapter() {
        public void mouseClicked(MouseEvent e) {
            JList source = (JList) e.getSource();
            if (e.getClickCount() == 2) {
                ListSelectionListener[] listeners = source.getListSelectionListeners();
                for (int i = 0; i < listeners.length; i++) {
                    listeners[i].valueChanged(new ListSelectionEvent(source, source.getSelectedIndex(),
                            source.getSelectedIndex(), false));
                }/* ww w  .j ava  2  s.c  o m*/
            }
        }
    });
}

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From source file:Main.java

@Override
public void valueChanged(final ListSelectionEvent e) {
    JList list = (JList) e.getSource();
    list.ensureIndexIsVisible(list.getSelectedIndex());
}

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From source file:components.SplitPaneDemo.java

public void valueChanged(ListSelectionEvent e) {
    JList list = (JList) e.getSource();
    updateLabel(imageNames[list.getSelectedIndex()]);
}

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From source file:io.neocdtv.simpleplayer.ui.PlaylistTransferHandler.java

protected void importString(JComponent c, String str) {
    JList target = (JList) c;
    DefaultListModel listModel = (DefaultListModel) target.getModel();
    int index = target.getSelectedIndex();

    //Prevent the user from dropping data back on itself.
    //For example, if the user is moving items #4,#5,#6 and #7 and
    //attempts to insert the items after item #5, this would
    //be problematic when removing the original items.
    //So this is not allowed.
    if (indices != null && index >= indices[0] - 1 && index <= indices[indices.length - 1]) {
        indices = null;//  w w w .  j a  v a  2 s.c o m
        return;
    }

    int max = listModel.getSize();
    if (index < 0) {
        index = max;
    } else {
        index++;
        if (index > max) {
            index = max;
        }
    }
    addIndex = index;
    String[] values = str.split("\n");
    addCount = values.length;
    for (String value : values) {
        listModel.add(index++, value);
    }
}

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From source file:SplitPaneDemo2.java

public void valueChanged(ListSelectionEvent e) {
    if (e.getValueIsAdjusting())
        return;//  ww w  .ja  v a 2 s  .  co m

    JList theList = (JList) e.getSource();
    if (theList.isSelectionEmpty()) {
        label.setText("Nothing selected.");
    } else {
        int index = theList.getSelectedIndex();
        label.setText("Selected image number " + index);
    }
}

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From source file:DropDemo.java

protected void importString(JComponent c, String str) {
    JList target = (JList) c;
    DefaultListModel listModel = (DefaultListModel) target.getModel();
    int index = target.getSelectedIndex();

    // Prevent the user from dropping data back on itself.
    // For example, if the user is moving items #4,#5,#6 and #7 and
    // attempts to insert the items after item #5, this would
    // be problematic when removing the original items.
    // So this is not allowed.
    if (indices != null && index >= indices[0] - 1 && index <= indices[indices.length - 1]) {
        indices = null;//from   w  w  w. j a va2 s  .  co  m
        return;
    }

    int max = listModel.getSize();
    if (index < 0) {
        index = max;
    } else {
        index++;
        if (index > max) {
            index = max;
        }
    }
    addIndex = index;
    String[] values = str.split("\n");
    addCount = values.length;
    for (int i = 0; i < values.length; i++) {
        listModel.add(index++, values[i]);
    }
}

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From source file:ListCutPaste.java

/**
 * Bundle up the data for export.//from   w w  w. j  a  v  a 2s .co  m
 */
protected Transferable createTransferable(JComponent c) {
    JList list = (JList) c;
    int index = list.getSelectedIndex();
    String value = (String) list.getSelectedValue();
    return new StringSelection(value);
}

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