妈的，JLabel竟然设置不起来背景颜色

[asert]

import java.awt.Color;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class TestLink {

public TestLink() {
JFrame frame = new JFrame("Test MyLabel");
JPanel pane = new JPanel();

JLabel link = new JLabel("test");
link.setBackground(Color.BLUE);
pane.add(link);
frame.getContentPane().add(pane);
frame.setSize(300, 200);
frame.setVisible(true);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE );
}

public static void main(String[] str) {
new TestLink();
}
}

谁来帮我看看这是怎么回事?

[碧海情天-赵亮]

受益

[Kokonol]

JLabel link = new JLabel("test");
link.setOpaque(true);
link.setBackground(Color.BLUE);
pane.add(link);

// JLabel默认是透明的,所以直接setBackground()不好用.

[fjnu105022004005]

thanks