改变JApplet的MessagePanel中的文本颜色

Question

我需要使用MessagePanel来更改正在显示的文本的默认字体颜色。我在HTML文件中将字体颜色作为变量COLOR。这是我的Java文件：

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

public class DisplayMessage extends JApplet { 
@Override
public void init() {
    // Get parameter values from the HTML file
    String message = getParameter("Message");
    int x = Integer.parseInt(getParameter("X"));
    int y = Integer.parseInt(getParameter("Y"));
    String clr = getParameter("COLOR");
    String fontName = getParameter("FONTNAME");
    int fontSize = Integer.parseInt(getParameter("FONTSIZE"));


    // Create a message panel
    MessagePanel messagePanel = new MessagePanel(message);
    messagePanel.setFont(new Font(fontName, Font., fontSize));
    messagePanel.setXCoordinate(x);
    messagePanel.setYCoordinate(y);
    messagePanel.setForeground(Color.clr);


    // Add the message panel to the applet
    add(messagePanel);
}
}

MessagePanel类

import java.awt.FontMetrics;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JPanel;

public class MessagePanel extends JPanel {

    /**
     * The message to be displayed
     */
    private String message = "Welcome to Java";
    /**
     * The x coordinate where the message is displayed
     */
    private int xCoordinate = 20;
    /**
     * The y coordinate where the message is displayed
     */
    private int yCoordinate = 20;
    /**
     * Indicate whether the message is displayed in the center
     */
    private boolean centered;
    /**
     * The interval for moving the message horizontally and vertically
     */
    private int interval = 10;

    /**
     * Construct with default properties
     */
    public MessagePanel() {
    }

    /**
     * Construct a message panel with a specified message
     */
    public MessagePanel(String message) {
        this.message = message;
    }

    /**
     * Return message
     */
    public String getMessage() {
        return message;
    }

    /**
     * Set a new message
     */
    public void setMessage(String message) {
        this.message = message;
        repaint();
    }

    /**
     * Return xCoordinator
     */
    public int getXCoordinate() {
        return xCoordinate;
    }

    /**
     * Set a new xCoordinator
     */
    public void setXCoordinate(int x) {
        this.xCoordinate = x;
        repaint();
    }

    /**
     * Return yCoordinator
     */
    public int getYCoordinate() {
        return yCoordinate;
    }

    /**
     * Set a new yCoordinator
     */
    public void setYCoordinate(int y) {
        this.yCoordinate = y;
        repaint();
    }

    /**
     * Return centered
     */
    public boolean isCentered() {
        return centered;
    }

    /**
     * Set a new centered
     */
    public void setCentered(boolean centered) {
        this.centered = centered;
        repaint();
    }

    /**
     * Return interval
     */
    public int getInterval() {
        return interval;
    }

    /**
     * Set a new interval
     */
    public void setInterval(int interval) {
        this.interval = interval;
        repaint();
    }

    /**
     * Paint the message
     */
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        if (centered) {
            // Get font metrics for the current font
            FontMetrics fm = g.getFontMetrics();

            // Find the center location to display
            int stringWidth = fm.stringWidth(message);
            int stringAscent = fm.getAscent();
            // Get the position of the leftmost character in the baseline
            xCoordinate = getWidth() / 2 - stringWidth / 2;
            yCoordinate = getHeight() / 2 + stringAscent / 2;
        }

        g.drawString(message, xCoordinate, yCoordinate);
    }

    /**
     * Move the message left
     */
    public void moveLeft() {
        xCoordinate -= interval;
        repaint();
    }

    /**
     * Move the message right
     */
    public void moveRight() {
        xCoordinate += interval;
        repaint();
    }

    /**
     * Move the message up
     */
    public void moveUp() {
        yCoordinate -= interval;
        repaint();
    }

    /**
     * Move the message down
     */
    public void moveDown() {
        yCoordinate += interval;
        repaint();
    }

    /**
     * Override get method for preferredSize
     */
    public Dimension getPreferredSize() {
        return new Dimension(200, 30);
    }
}