Set the Size of the Divider in a JSplitPane in Java

  /*w ww . j a v a 2 s.c o  m*/
import java.awt.BorderLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JSplitPane;

public class Main {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Tabbed Pane Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton leftComponent = new JButton("left"); 
    JButton rightComponent= new JButton("right");
  
    JSplitPane pane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftComponent, rightComponent);
    int size = pane.getDividerSize();
    size = 1;
    pane.setDividerSize(size);

    frame.add(pane, BorderLayout.CENTER);
    frame.setSize(400, 150);
    frame.setVisible(true);
  }
}