Java by API/javax.swing/DefaultListSelectionModel

DefaultListSelectionModel.MULTIPLE_INTERVAL_SELECTION

  
import javax.swing.DefaultListSelectionModel;
import javax.swing.JList;
public class Main {
  public static void main(String[] argv) throws Exception {
    String[] items = { "A", "B", "C", "D" };
    JList list = new JList(items);
    list.setSelectionMode(DefaultListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
  }
}

DefaultListSelectionModel: setLeadAnchorNotificationEnabled(boolean flag)

 
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultListSelectionModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class MainClass extends JPanel {
  String label[] = { "Zero", "One", "Two" };
  JList list;
  public MainClass() {
    setLayout(new BorderLayout());
    list = new JList(label);
    JScrollPane pane = new JScrollPane(list);
    DefaultListSelectionModel m = new DefaultListSelectionModel();
    m.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    m.setLeadAnchorNotificationEnabled(false);
    list.setSelectionModel(m);
    list.addListSelectionListener(new ListSelectionListener() {
      public void valueChanged(ListSelectionEvent e) {
        System.out.println(e.toString());
      }
    });
    add(pane, BorderLayout.NORTH);
  }
  public static void main(String s[]) {
    JFrame frame = new JFrame("List Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(new MainClass());
    frame.pack();
    frame.setVisible(true);
  }
}

DefaultListSelectionModel: setSelectionMode(int selectionMode)

 
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultListSelectionModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class MainClass extends JPanel {
  String label[] = { "Zero", "One", "Two" };
  JList list;
  public MainClass() {
    setLayout(new BorderLayout());
    list = new JList(label);
    JScrollPane pane = new JScrollPane(list);
    DefaultListSelectionModel m = new DefaultListSelectionModel();
    m.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    m.setLeadAnchorNotificationEnabled(false);
    list.setSelectionModel(m);
    list.addListSelectionListener(new ListSelectionListener() {
      public void valueChanged(ListSelectionEvent e) {
        System.out.println(e.toString());
      }
    });
    add(pane, BorderLayout.NORTH);
  }
  public static void main(String s[]) {
    JFrame frame = new JFrame("List Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(new MainClass());
    frame.pack();
    frame.setVisible(true);
  }
}