Java Swing - 如何创建箭头按钮

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import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.plaf.basic.BasicArrowButton;
public class Main extends JPanel {
  public Main() {
    setLayout(new BorderLayout());
    JPanel east = new JPanel(new BorderLayout());
    add(east, BorderLayout.EAST);
    BasicArrowButton north = new BasicArrowButton(BasicArrowButton.NORTH);
    east.add(north, BorderLayout.NORTH);
    BasicArrowButton south = new BasicArrowButton(BasicArrowButton.SOUTH);
    east.add(south, BorderLayout.SOUTH);
  }
  public static void main(String[] args) {
    JFrame frame = new JFrame("Main");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(new Main());
    frame.setSize(200, 300);
    frame.setLocationByPlatform(true);
    frame.setVisible(true);
  }
}
 
 
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