设置JProgressBar文本的颜色

import javax.swing.plaf.basic.BasicProgressBarUI;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;

public class CustomProgressBarUI extends BasicProgressBarUI {
    private Color textColor; // 自定义文本颜色

    public void setTextColor(Color textColor) {
        this.textColor = textColor;
    }

    @Override
    protected void paintText(Graphics g, int x, int y, String text) {
        if (text != null && !text.isEmpty()) {
            Graphics2D g2d = (Graphics2D) g;
            g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
            g2d.setColor(textColor); // 设置文本颜色
            g2d.drawString(text, x, y);
        }
    }
}

import javax.swing.JFrame;
import javax.swing.JProgressBar;
import java.awt.Color;

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 200);

        JProgressBar progressBar = new JProgressBar();
        progressBar.setString("Loading...");
        progressBar.setStringPainted(true);

        CustomProgressBarUI progressBarUI = new CustomProgressBarUI();
        progressBarUI.setTextColor(Color.RED); // 设置文本颜色为红色
        progressBar.setUI(progressBarUI);

        frame.add(progressBar);
        frame.setVisible(true);
    }
}