求教：仍然是一个关于JButton的问题

Question

JButton在实现了鼠标停留在其上时有边框显示，而离开时的恢复没有边框显示功能后，如果添加了多个按钮则会发生明显的抖动现象，不象IE之类的按钮那样显示很平稳，请教高手该如何解决？

Answer 1

button.addMouseListener(new MouseAdapter(){
      public void mouseEntered(MouseEvent e) {//进入button组件时
        button.setBorder(BorderFactory.createRaisedBevelBorder());
      }
      public void mouseExited(MouseEvent e) {//离开button组件时
        button.setBorder(BorderFactory.createEmptyBorder());
      }
         });

Answer 2

import java.awt.BorderLayout;import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.plaf.basic.BasicBorders;public class T {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}

JToolBar toolbar = new JToolBar();
toolbar.setRollover(true);
toolbar.add(new JButton("Copy"));
toolbar.add(new JButton("Cut"));
toolbar.add(new JButton("Paste")); Border btnBorder = new CompoundBorder(
new BasicBorders.RolloverButtonBorder(
UIManager.getColor("controlShadow"),
UIManager.getColor("controlDkShadow"),
UIManager.getColor("controlHighlight"),
UIManager.getColor("controlLtHighlight")),
new EmptyBorder(3,3,3,3));

JPanel p = new JPanel();
JButton btn1 = new JButton("Copy");
JButton btn2 = new JButton("Cut");
JButton btn3 = new JButton("Paste");

btn1.setRolloverEnabled(true);
btn2.setRolloverEnabled(true);
btn3.setRolloverEnabled(true);

btn1.setBorder(btnBorder);
btn2.setBorder(btnBorder);
btn3.setBorder(btnBorder);
p.add(btn1);
p.add(btn2);
p.add(btn3);

JFrame f = new JFrame("Test");
f.getContentPane().add(p, BorderLayout.CENTER);
f.getContentPane().add(toolbar, BorderLayout.NORTH);
f.setSize(300, 300);
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}