You might be able to override the setLayout(LayoutManager) method of JSpinner to use a custom LayoutManager.
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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class SpinnerLayoutTest {
public JComponent makeUI() {
SpinnerNumberModel m = new SpinnerNumberModel(10, 0, 1000, 1);
JSpinner spinner = new JSpinner(m) {
@Override public void setLayout(LayoutManager mgr) {
super.setLayout(new SpinnerLayout());
}
};
JPanel p = new JPanel(new BorderLayout(5,5));
p.add(new JSpinner(m), BorderLayout.NORTH);
p.add(spinner, BorderLayout.SOUTH);
p.setBorder(BorderFactory.createEmptyBorder(16,16,16,16));
return p;
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override public void run() {
createAndShowGUI();
}
});
}
public static void createAndShowGUI() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new SpinnerLayoutTest().makeUI());
f.setSize(320, 160);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
class SpinnerLayout extends BorderLayout {
@Override public void addLayoutComponent(Component comp, Object constraints) {
if("Editor".equals(constraints)) {
constraints = "Center";
} else if("Next".equals(constraints)) {
constraints = "North";
} else if("Previous".equals(constraints)) {
constraints = "South";
}
super.addLayoutComponent(comp, constraints);
}
}