如何更改JSeparator的颜色？

Question

问题出在标题中.

我目前正在做类似的事情:

jSperator = new JSeparator();
jSeparator1.setForeground(new java.awt.Color(255, 51, 51));

但分隔符保持默认颜色,如212,212,212.

Answer 1

必须改变’Background’而不是’Foreground’

逻辑可能有所不同 Nimbus Look and Feel

金属L&F

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

public class GridBagSeparator1 {

    public static void main(String[] args) {
        JFrame frame = new JFrame("Laying Out Components in a Grid");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JSeparator sep = new JSeparator(SwingConstants.HORIZONTAL);
        sep.setBackground(Color.black);
        JSeparator sep1 = new JSeparator(SwingConstants.HORIZONTAL);
        sep1.setBackground(Color.blue);
        JSeparator sep2 = new JSeparator(SwingConstants.HORIZONTAL);
        sep2.setBackground(Color.green);
        JSeparator sep3 = new JSeparator(SwingConstants.HORIZONTAL);
        sep3.setBackground(Color.red);

        frame.setLayout(new GridLayout(4, 0));
        frame.add(sep);
        frame.add(sep1);
        frame.add(sep2);
        frame.add(sep3);
        frame.pack();
        frame.setVisible(true);
    }
}

Answer 2

JSeparator有2种颜色,一种用于线条,一种用于阴影.您可以分别更改两者,将颜色设置为背景和前景.

JSeparator sep = new JSeparator();
sep.setForeground(Color.green); // top line color
sep.setBackground(Color.green.brighter()); // bottom line color