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import java.awt.BorderLayout;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellEditor;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellEditor;
public class MainClass {
public static void main(final String args[]) {
JFrame frame = new JFrame("Editable Tree");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTree tree = new JTree();
tree.setEditable(true);
DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();
String elements[] = { "A", "B", "C", "D" };
JComboBox comboBox = new JComboBox(elements);
comboBox.setEditable(true);
TreeCellEditor comboEditor = new DefaultCellEditor(comboBox);
TreeCellEditor editor = new DefaultTreeCellEditor(tree, renderer, comboEditor);
tree.setCellEditor(editor);
JScrollPane scrollPane = new JScrollPane(tree);
frame.add(scrollPane, BorderLayout.CENTER);
frame.setSize(300, 150);
frame.setVisible(true);
}
}
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