java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.JScrollBar
      - javax.swing.JScrollPane.ScrollBar

实现的所有接口

Adjustable ， ImageObserver ， MenuContainer ， Serializable ， Accessible ， UIResource

Enclosing class:

JScrollPane
```
protected class JScrollPane.ScrollBar
extends JScrollBar
implements UIResource
```
默认情况下， JScrollPane创建作为此类实例的滚动条。 Scrollbar会覆盖getUnitIncrement和getBlockIncrement方法，以便在视口的视图为Scrollable ，要求视图计算这些值。除非已明确设置单位/块增量。
警告：此类的序列化对象与以后的Swing版本不兼容。当前的序列化支持适用于运行相同版本Swing的应用程序之间的短期存储或RMI。从1.4开始， java.beans软件包中添加了对所有JavaBeans java.beans长期存储的支持。请参阅XMLEncoder 。

另请参见：

Scrollable ， JScrollPane.createVerticalScrollBar() ， JScrollPane.createHorizontalScrollBar() ， Serialized Form

嵌套类汇总
- 嵌套类/接口声明在类 javax.swing.JScrollBar
  JScrollBar.AccessibleJScrollBar
- 嵌套类/接口声明在类 javax.swing.JComponent
  JComponent.AccessibleJComponent
- 嵌套类/接口声明在类 java.awt.Container
  Container.AccessibleAWTContainer
- 嵌套类/接口声明在类 java.awt.Component
  Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

字段汇总
- 声明的属性在类 javax.swing.JScrollBar
  blockIncrement, model, orientation, unitIncrement
- 声明的属性在类 javax.swing.JComponent
  listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
- 声明的属性在类 java.awt.Component
  accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
- Fields declared in interface java.awt.Adjustable
  HORIZONTAL, NO_ORIENTATION, VERTICAL
- Fields declared in interface java.awt.image.ImageObserver
  ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

构造方法摘要

构造方法
构造器	描述
`ScrollBar(int orientation)`	创建具有指定方向的滚动条。

方法摘要

所有方法实例方法具体的方法
变量和类型	方法	描述
`int`	`getBlockIncrement(int direction)`	如果视口的视图是 `Scrollable`对象，则计算滚动的块增量。
`int`	`getUnitIncrement(int direction)`	如果视口的视图是 `Scrollable`对象，则计算滚动的单位增量。
`void`	`setBlockIncrement(int blockIncrement)`	消息超级设置值，并将 `blockIncrementSet`实例变量重置为true。
`void`	`setUnitIncrement(int unitIncrement)`	消息超级设置值，并将 `unitIncrementSet`实例变量重置为true。

声明方法的类 javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

声明方法的类 java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

声明方法的类 java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

声明方法的类 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造方法详细信息
  - ScrollBar
```
public ScrollBar(int orientation)
```
    创建具有指定方向的滚动条。选项是：
    
    ScrollPaneConstants.VERTICAL
    
    ScrollPaneConstants.HORIZONTAL
    参数
    
    orientation - 一个整数，指定上面显示的一个合法方向值
    
    从以下版本开始：
    
    1.4
- 方法详细信息
  - setUnitIncrement
```
public void setUnitIncrement(int unitIncrement)
```
    消息超级设置值，并将 unitIncrementSet实例变量重置为true。
    
    Specified by:
    
    setUnitIncrement在界面 Adjustable
    
    重写：
    
    setUnitIncrement类 JScrollBar
    
    参数
    
    unitIncrement - 新的单位增量值，以像素为单位
    
    另请参见：
    
    JScrollBar.getUnitIncrement(int)
  - getUnitIncrement
```
public int getUnitIncrement(int direction)
```
    如果视口的视图是Scrollable对象，则计算滚动的单位增量。否则返回super.getUnitIncrement 。
    
    重写：
    
    getUnitIncrement在类 JScrollBar
    
    参数
    
    direction - 向上/向左滚动小于零，向下/向右滚动大于零
    
    结果
    
    一个整数，以像素为单位，包含单位增量
    
    另请参见：
    
    Scrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)
  - setBlockIncrement
```
public void setBlockIncrement(int blockIncrement)
```
    消息超级设置值，并将 blockIncrementSet实例变量重置为true。
    
    Specified by:
    
    setBlockIncrement在接口 Adjustable
    
    重写：
    
    setBlockIncrement在类 JScrollBar
    
    参数
    
    blockIncrement - 新块增量值，以像素为单位
    
    另请参见：
    
    JScrollBar.getBlockIncrement()
  - getBlockIncrement
```
public int getBlockIncrement(int direction)
```
    如果视口的视图是Scrollable对象，则计算滚动的块增量。否则， blockIncrement等于视口的宽度或高度。如果没有视口返回super.getBlockIncrement 。
    
    重写：
    
    getBlockIncrement类 JScrollBar
    
    参数
    
    direction - 向上/向左滚动小于零，向下/向右滚动大于零
    
    结果
    
    一个整数，以像素为单位，包含块增量
    
    另请参见：
    
    Scrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)

Class JScrollPane.ScrollBar

嵌套类汇总

嵌套类/接口声明在类 javax.swing.JScrollBar

嵌套类/接口声明在类 javax.swing.JComponent

嵌套类/接口声明在类 java.awt.Container

嵌套类/接口声明在类 java.awt.Component

字段汇总

声明的属性在类 javax.swing.JScrollBar

声明的属性在类 javax.swing.JComponent

声明的属性在类 java.awt.Component

Fields declared in interface java.awt.Adjustable

Fields declared in interface java.awt.image.ImageObserver

构造方法摘要

方法摘要

声明方法的类 javax.swing.JScrollBar

声明方法的类 javax.swing.JComponent

声明方法的类 java.awt.Container

声明方法的类 java.awt.Component

声明方法的类 java.lang.Object

构造方法详细信息

ScrollBar

方法详细信息

setUnitIncrement

getUnitIncrement

setBlockIncrement

getBlockIncrement