JSeparator.setOrientation(int orientation) has the following syntax.
public void setOrientation(int orientation)
In the following code shows how to use JSeparator.setOrientation(int orientation) method.
import javax.swing.JFrame; import javax.swing.JSeparator; //w w w .j av a 2 s . c o m public class Main { public static void main(String[] a){ JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JSeparator sep = new JSeparator(JSeparator.VERTICAL); sep.setOrientation(JSeparator.VERTICAL); frame.add(sep); frame.setSize(300, 200); frame.setVisible(true); } }