Java JSplit窗格分割器位置固定

我有两个拆分窗格。这是代码。我想要的是垂直分隔符不允许拖动，它可以扩展，但应该固定在前面提到的分隔符位置上，不能像我们通常可以的那样使用鼠标向上或向下移动，这是代码，我需要添加什么

package Arrears;

import UI.UILabel;
import UI.UIPanel;
import ebg.MainApp;
import java.awt.BorderLayout;
import javax.swing.JInternalFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JSplitPane;


public class swingMenu extends JInternalFrame
{
    JMenuBar mbar;

    JMenu fileMenu;
    JMenu helpMenu;

    JMenuItem openFileMenuItem;
    JMenuItem exitFileMenuItem;

    JSplitPane horiSplitPane;
    JSplitPane verSplitPane;

    UIPanel horiJPanel;
    UIPanel righJPanel;
    UIPanel downJPanel;

    UILabel side;
    UILabel right;
    UILabel down;
    public swingMenu(MainApp This)
    {
        super("");

        side=new UILabel("side");
        right=new UILabel("right");
        down=new UILabel("down");

        mbar=new JMenuBar();

        fileMenu=new JMenu("File");
        helpMenu=new JMenu("Help");

        openFileMenuItem=new JMenuItem("Open");
        exitFileMenuItem=new JMenuItem("Exit");

        fileMenu.add(openFileMenuItem);
        fileMenu.add(exitFileMenuItem);

        mbar.add(fileMenu);
        mbar.add(helpMenu);

        horiJPanel=new UIPanel();
        horiJPanel.setLayout(new BorderLayout());
        horiJPanel.add(right);

        righJPanel=new UIPanel();
        righJPanel.setLayout(new BorderLayout());
        righJPanel.add(right);

        downJPanel=new UIPanel();
        downJPanel.setLayout(new BorderLayout());
        downJPanel.add(right);

        verSplitPane= new JSplitPane(JSplitPane.VERTICAL_SPLIT, righJPanel,downJPanel);
        verSplitPane.setOneTouchExpandable(true);
        verSplitPane.setResizeWeight(0.8);
        verSplitPane.setDividerLocation(360);

        horiSplitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, horiJPanel, verSplitPane);
        horiSplitPane.setOneTouchExpandable(true);
        horiSplitPane.setResizeWeight(0.2);
        horiSplitPane.setDividerLocation(120);

        getContentPane().add(horiSplitPane);

        setResizable(false);
        setMaximizable(true);
        setIconifiable(true);
        setClosable(true);
        setDefaultCloseOperation(JInternalFrame.DISPOSE_ON_CLOSE);
        setSize(550,500);
        setLocation(280, 80);
        setVisible(true);
        setOpaque(true);
        setJMenuBar(mbar);
    }
}

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将添加到垂直JSplitPane（righJPanel和downJPanel）的组件的最小大小设置为您希望的大小。在这种情况下，由于不允许调整帧的大小，这将产生将分隔器锁定在其指定位置的效果