Java tutorial
import java.awt.Component; import java.awt.ComponentOrientation; import javax.swing.DefaultListCellRenderer; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.ListCellRenderer; public class Main extends JFrame { public Main() { JComboBox comboBox = new JComboBox(); setListCellRendererOf(comboBox); comboBox.addItem("A"); comboBox.addItem("B"); comboBox.addItem("C"); getContentPane().add(comboBox, "North"); setSize(200, 100); setDefaultCloseOperation(EXIT_ON_CLOSE); } private void setListCellRendererOf(JComboBox comboBox) { comboBox.setRenderer(new ListCellRenderer() { @Override public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { Component component = new DefaultListCellRenderer().getListCellRendererComponent(list, value, index, isSelected, cellHasFocus); component.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); return component; } }); } public static void main(String[] args) { new Main().setVisible(true); } }