我无法产生您的问题，能否请您使用我的SSCCE用于左侧显示。
从代码
import java.awt.ComponentOrientation;import javax.swing.Jframe;import javax.swing.JScrollPane;import javax.swing.Jtextarea;import javax.swing.UIManager;public class RightToLeft { public static void main(String[] args) { javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (Exception e) { e.printStackTrace(); } Jtextarea text = new Jtextarea(10, 5); text.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); text.setText("one/n " + "!twon" + ".threen" + "/fourn" + "five!n" + "six.n" + "sevenn" + "eightn"); JScrollPane pane = new JScrollPane(text); Jframe.setDefaultLookAndFeelDecorated(true); Jframe frame = new Jframe("العنوان بالعربي"); frame.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); frame.add(pane); frame.pack(); frame.setDefaultCloseOperation(Jframe.DISPOSE_ON_CLOSE); frame.setVisible(true); } }); }}
