MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

public class MainClass {

    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);

        JList jlist = new JList(labels);
        JScrollPane scrollPane1 = new JScrollPane(jlist);
        frame.add(scrollPane1);

        ListSelectionListener listSelectionListener = new ListSelectionListener() {
            public void valueChanged(ListSelectionEvent listSelectionEvent) {
                System.out.println("First index: " + listSelectionEvent.getFirstIndex());
                System.out.println(", Last index: " + listSelectionEvent.getLastIndex());
                boolean adjust = listSelectionEvent.getValueIsAdjusting();
                System.out.println(", Adjusting? " + adjust);
                if (!adjust) {
                    JList list = (JList) listSelectionEvent.getSource();
                    int selections[] = list.getSelectedIndices();
                    Object selectedValues[] = list.getSelectedValues();
                    for (int i = 0, n = selections.length; i < n; i++) {
                        if (i == 0) {
                            System.out.println("  Selections: ");
                        }
                        System.out.println(selections[i] + "/" + selectedValues[i] + " ");
                    }
                }
            }
        };
        jlist.addListSelectionListener(listSelectionListener);

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