import javax.swing.JTabbedPane;
public class Main {
public static void main(String[] argv) throws Exception {
JTabbedPane pane = new JTabbedPane();
int rows = pane.getTabRunCount();
int policy = pane.getTabLayoutPolicy(); // WRAP_TAB_LAYOUT
pane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
}
}