import javax.swing.*; import java.awt.*; /* */ public class UpDownButton4 extends JApplet { int x=20; @Override public void init() { JButton lBtn = new JButton("Left"); JButton rBtn = new JButton("Right"); lBtn.addActionListener(e -> { x-=10; repaint(); }); rBtn.addActionListener(e -> { x+=10; repaint(); }); setLayout(new FlowLayout()); add(lBtn); add(rBtn); } @Override public void paint(Graphics g) { super.paint(g); g.drawString("HELLO WORLD!", x, 55); } }