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    <p>The basic idea is you need to know what field was last selected. The problem is, when you select the slider, it will fire a focus gained event...</p> <p>The simplest idea would be to use a <code>FocusListener</code> registered only to the text fields and maintain a reference to the last field selected.</p> <p>When the slider changes, you would simply interact with the last selected field (if it's not <code>null</code>)</p> <p><img src="https://i.stack.imgur.com/T3cok.png" alt="enter image description here"></p> <pre><code>import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.event.FocusAdapter; import java.awt.event.FocusEvent; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JSlider; import javax.swing.JTextField; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class SliderControl { public static void main(String[] args) { new SliderControl(); } public SliderControl() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { } JFrame frame = new JFrame("Testing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new BorderLayout()); frame.add(new TestPane()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class TestPane extends JPanel { private JSlider slider; private JTextField[] fields; private JTextField selectedField; public TestPane() { setLayout(new GridBagLayout()); fields = new JTextField[3]; FocusHandler focusHandler = new FocusHandler(); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = 0; gbc.gridy = 0; for (int index = 0; index &lt; 3; index++) { fields[index] = new JTextField(3); fields[index].addFocusListener(focusHandler); add(fields[index], gbc); gbc.gridy++; } gbc.fill = GridBagConstraints.HORIZONTAL; slider = new JSlider(); slider.addChangeListener(new ChangeListener() { @Override public void stateChanged(ChangeEvent e) { if (selectedField != null) { selectedField.setText(String.valueOf(slider.getValue())); } } }); add(slider, gbc); } protected class FocusHandler extends FocusAdapter { @Override public void focusGained(FocusEvent e) { if (e.getComponent() instanceof JTextField) { selectedField = (JTextField) e.getComponent(); } } } } } </code></pre>
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    1. POIs it possible to use a JSlider controlling multiple JTextfield?
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    1. USMadProgrammer
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    1. COthanks you so much.
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      1. USRand Mate
 

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