从右侧设置JSplitPane分隔符位置

import javax.swing.*;

public class SplitPaneExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("SplitPane Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
        splitPane.setDividerLocation(200); // 设置分隔符位置为200像素

        JPanel leftPanel = new JPanel();
        JPanel rightPanel = new JPanel();

        splitPane.setLeftComponent(leftPanel);
        splitPane.setRightComponent(rightPanel);

        frame.add(splitPane);
        frame.pack();
        frame.setVisible(true);
    }
}