Java by API/java.awt/ComponentOrientation

ComponentOrientation: getOrientation(Locale locale)

 
import java.awt.ruponentOrientation;
import java.util.Locale;
public class Main {
  public static void main(String[] argv) throws Exception {
    Locale myLocale = Locale.getDefault();
    ComponentOrientation ce = ComponentOrientation.getOrientation(myLocale);
    System.out.println("Is horizontal? " + ce.isHorizontal());
    System.out.println("Is left to right? " + ce.isLeftToRight());
  }
}

ComponentOrientation: isHorizontal()

 
 
import java.awt.ruponentOrientation;
import java.util.Locale;
public class Main {
  public static void main(String[] argv) throws Exception {
    Locale myLocale;
    if (argv.length < 2)
      myLocale = Locale.getDefault();
    else
      myLocale = new Locale(argv[0], argv[1]);
    ComponentOrientation ce = ComponentOrientation.getOrientation(myLocale);
    System.out.println("Is horizontal? " + ce.isHorizontal());
    System.out.println("Is left to right? " + ce.isLeftToRight());
  }
}

ComponentOrientation: isLeftToRight()

 
 
import java.awt.ruponentOrientation;
import java.util.Locale;
public class Main {
  public static void main(String[] argv) throws Exception {
    Locale myLocale;
    if (argv.length < 2)
      myLocale = Locale.getDefault();
    else
      myLocale = new Locale(argv[0], argv[1]);
    ComponentOrientation ce = ComponentOrientation.getOrientation(myLocale);
    System.out.println("Is horizontal? " + ce.isHorizontal());
    System.out.println("Is left to right? " + ce.isLeftToRight());
  }
}

ComponentOrientation.RIGHT_TO_LEFT

 
import java.awt.ruponent;
import java.awt.ruponentOrientation;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
public class MainClass extends JFrame {
  public MainClass() {
    super("MainClass");
    Container contentPane = getContentPane();
    contentPane.setLayout(new FlowLayout());
    contentPane.add(new JButton("OK"));
    contentPane.add(new JButton("Cancel"));
    applyOrientation(this, ComponentOrientation.RIGHT_TO_LEFT);
  }
  public static void main(String[] argv) {
    JFrame frame = new MainClass();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    frame.pack();
    frame.setVisible(true);
  }
  private void applyOrientation(Component c, ComponentOrientation o) {
    c.setComponentOrientation(o);
    if (c instanceof JMenu) {
      JMenu menu = (JMenu) c;
      int ncomponents = menu.getMenuComponentCount();
      for (int i = 0; i < ncomponents; ++i) {
        applyOrientation(menu.getMenuComponent(i), o);
      }
    } else if (c instanceof Container) {
      Container container = (Container) c;
      int ncomponents = container.getComponentCount();
      for (int i = 0; i < ncomponents; ++i) {
        applyOrientation(container.getComponent(i), o);
      }
    }
  }
}