import javax.swing.JButton;
import javax.swing.JSplitPane;
public class Main {
public static void main(String[] argv) throws Exception {
JButton leftComponent = new JButton("left");
JButton rightComponent = new JButton("right");
// Create a left-right split pane
JSplitPane hpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftComponent, rightComponent);
}
}