ViewportUI

java.lang.Object
- javax.swing.plaf.ComponentUI
- - javax.swing.plaf.ViewportUI

已知直接子类：

BasicViewportUI ， MultiViewportUI ， SynthViewportUI
```
public abstract class ViewportUI
extends ComponentUI
```
JViewport的可插入外观界面。

构造方法摘要

构造方法
构造器	描述
`ViewportUI()`

方法摘要
- 声明方法的类 javax.swing.plaf.ComponentUI
  contains, createUI, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update
- 声明方法的类 java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造方法详细信息
  - ViewportUI
```
public ViewportUI()
```