You can set an initial selection (s) by using the setSelectedIndex and setSelectedIndices methods (the indexing is zero-based, so index 0 refers to the first option in the JList).
public void setSelectedIndex (int index)
public void setSelectedIndices (int[] indices)
import java.awt.FlowLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
public class JComboBoxTest {
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("JComboBox Test");
frame.setLayout(new FlowLayout());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String[] selections = { "green", "red", "orange", "dark blue" };
JComboBox comboBox = new JComboBox(selections);
comboBox.setSelectedIndex(1);
System.out.println(comboBox.getSelectedItem());
frame.add(comboBox);
frame.pack();
frame.setVisible(true);
}
}
