如何让两个JPanel总是占据屏幕的一半,水平分割？

Question

如标题中所述.我有两个JPanels一个在另一个上面使用a BorderLayout().

import java.awt.*;
import javax.swing.*;

public class myForm(){
    public static void main(String[] args) {       
        JFrame myFrame = new JFrame("SingSong");
        myFrame.setLocation(100,100);
        myFrame.setSize(new Dimension(1024,800));
        myFrame.setLayout(new BorderLayout());
        JPanel jp = new JPanel();
        jp.setBackground(new Color(0x00FF00FF));
        JPanel jp2 = new JPanel(new BorderLayout());
        jp2.setBackground(new Color(0x00000000));

        jp.setPreferredSize(new Dimension(100,400));
        jp2.setPreferredSize(new Dimension(100,400));
        jp2.setLocation(0, 512);

        myFrame.add(jp2, BorderLayout.SOUTH);
        myFrame.add(jp, BorderLayout.NORTH);
    }
}        

它们各占一半,但我怎么能设置它以便它们总是占用JFrame的一半,即使调整大小？(PS我通常使用更好的变量名,我只是把它作为SSCCE)

Answer 1

试试吧 GridLayout

JFrame myFrame = new JFrame("SingSong");
myFrame.setLocation(100, 100);
myFrame.setSize(new Dimension(1024, 800));

GridLayout layout = new GridLayout(2, 1);
myFrame.setLayout(layout);

JPanel jp = new JPanel();
jp.setBackground(new Color(0x00FF00FF));

JPanel jp2 = new JPanel(new BorderLayout());
jp2.setBackground(new Color(0x00000000));

myFrame.add(jp);
myFrame.add(jp2);

myFrame.setVisible(true);