import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.TreePath;
public class Main {
public static void main(String[] argv) throws Exception {
JTree tree = new JTree();
tree.addTreeSelectionListener(new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent evt) {
TreePath[] paths = evt.getPaths();
for (int i = 0; i < paths.length; i++) {
if (evt.isAddedPath(i)) {
System.out.println("This node has been selected");
} else {
System.out.println("This node has been deselected");
}
}
}
});
}
}