你可以使用
setForeground()来更改按钮文本的颜色，但是
setBackground()在某些平台上，相应的文本不能很好地读取。使用
a Border是一种选择。彩色面板（如下所示）是另一个面板。
package overflow;import java.awt.Color;import java.awt.EventQueue;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.util.ArrayList;import java.util.List;import java.util.Random;import javax.swing.JButton;import javax.swing.Jframe;import javax.swing.JPanel;import javax.swing.Timer;public class ButtonTest extends JPanel implements ActionListener { private static final int N = 4; private static final Random rnd = new Random(); private final Timer timer = new Timer(1000, this); private final List<ButtonPanel> panels = new ArrayList<ButtonPanel>(); public ButtonTest() { this.setLayout(new GridLayout(N, N, N, N)); for (int i = 0; i < N * N; i++) { ButtonPanel bp = new ButtonPanel(i); panels.add(bp); this.add(bp); } } @Override public void actionPerformed(ActionEvent e) { for (JPanel p : panels) { p.setBackground(new Color(rnd.nextInt())); } } private static class ButtonPanel extends JPanel { public ButtonPanel(int i) { this.setBackground(new Color(rnd.nextInt())); this.add(new JButton("Button " + String.valueOf(i))); } } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { Jframe f = new Jframe("ButtonTest"); f.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE); ButtonTest bt = new ButtonTest(); f.add(bt); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); bt.timer.start(); } }); }}
