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import java.awt.Graphics; import javax.swing.*; public class Demo { JFrame jf; JLabel[] labels; JPanel panel; public Demo() { jf = new JFrame(); jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); labels = new JLabel[10]; Box vbox = Box.createVerticalBox(); for (int i = 0; i < 10; i++) { labels[i] = new JLabel(); vbox.add(labels[i]); } panel = new JPanel(); panel.add(vbox); jf.add(panel); jf.setSize(300, 250); jf.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new DemoRunnable()); } public void updateState() { for (JLabel l : labels) { if (Math.random() > 0.5) l.setText("777777777777777777777777777777777777"); else l.setText("10000000000000000000000000000000000000"); } } } class DemoRunnable implements Runnable { Demo demo; DemoRunnable() { this.demo = new Demo(); } @Override public void run() { Thread t = new Thread(new Runnable() { @Override public void run() { while (true) { try { Thread.sleep(0); } catch (InterruptedException e) { e.printStackTrace(); } demo.updateState(); } } }); t.start(); } } I see such effect when this program is perfomed. Is it possible to eliminate it(zeroes must be instead dots)?

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