JComponent属性 toolTipText font background foreground doubleBuffered border ■preferredSize minimumSize ■maximumSize ©2006计算机系杨厚群 All rights lefts reserved.©2006 计算机系 杨厚群 All rights & lefts reserved. JComponent 属性 toolTipText font background foreground doubleBuffered border preferredSize minimumSize maximumSize