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社区首页 >问答首页 >Java SE 6或Java SE 7中是否有非final字段

问Java SE 6或Java SE 7中是否有非final字段
EN

Stack Overflow用户
提问于 2013-06-23 09:38:07
回答 2查看 86关注 0票数 1

在SE 6或SE 7的任何类中，是否有一个字段不是最终字段，即哪些字段可以直接设置？

我正在处理从另一种语言(Haskell)到Java的绑定，我正在寻找那个特定的案例，以检查我的实现是否正确工作。

我对是否应该直接访问字段的讨论不感兴趣(我的绑定无论如何都会生成getter和setter，因为Haskell中只有函数)。

那么:您是否知道java标准库中的任何类中都有非final、静态或非静态字段？

mutable
java
field
final
EN

回答 2

Stack Overflow用户

回答已采纳

发布于 2013-06-23 09:57:14

代码语言：javascript
复制
java.awt.Dimension.height
java.awt.Dimension.width
java.awt.Event.arg
java.awt.Event.clickCount
java.awt.Event.evt
java.awt.Event.id
java.awt.Event.key
java.awt.Event.modifiers
java.awt.Event.target
java.awt.Event.when
java.awt.Event.x
java.awt.Event.y
java.awt.GridBagConstraints.anchor
java.awt.GridBagConstraints.fill
java.awt.GridBagConstraints.gridheight
java.awt.GridBagConstraints.gridwidth
java.awt.GridBagConstraints.gridx
java.awt.GridBagConstraints.gridy
java.awt.GridBagConstraints.insets
java.awt.GridBagConstraints.ipadx
java.awt.GridBagConstraints.ipady
java.awt.GridBagConstraints.weightx
java.awt.GridBagConstraints.weighty
java.awt.GridBagLayout.columnWeights
java.awt.GridBagLayout.columnWidths
java.awt.GridBagLayout.rowHeights
java.awt.GridBagLayout.rowWeights
java.awt.Insets.bottom
java.awt.Insets.left
java.awt.Insets.right
java.awt.Insets.top
java.awt.Point.x
java.awt.Point.y
java.awt.Polygon.npoints
java.awt.Polygon.xpoints
java.awt.Polygon.ypoints
java.awt.Rectangle.height
java.awt.Rectangle.width
java.awt.Rectangle.x
java.awt.Rectangle.y
java.awt.geom.Arc2D$Double.extent
java.awt.geom.Arc2D$Double.height
java.awt.geom.Arc2D$Double.start
java.awt.geom.Arc2D$Double.width
java.awt.geom.Arc2D$Double.x
java.awt.geom.Arc2D$Double.y
java.awt.geom.Arc2D$Float.extent
java.awt.geom.Arc2D$Float.height
java.awt.geom.Arc2D$Float.start
java.awt.geom.Arc2D$Float.width
java.awt.geom.Arc2D$Float.x
java.awt.geom.Arc2D$Float.y
java.awt.geom.CubicCurve2D$Double.ctrlx1
java.awt.geom.CubicCurve2D$Double.ctrlx2
java.awt.geom.CubicCurve2D$Double.ctrly1
java.awt.geom.CubicCurve2D$Double.ctrly2
java.awt.geom.CubicCurve2D$Double.x1
java.awt.geom.CubicCurve2D$Double.x2
java.awt.geom.CubicCurve2D$Double.y1
java.awt.geom.CubicCurve2D$Double.y2
java.awt.geom.CubicCurve2D$Float.ctrlx1
java.awt.geom.CubicCurve2D$Float.ctrlx2
java.awt.geom.CubicCurve2D$Float.ctrly1
java.awt.geom.CubicCurve2D$Float.ctrly2
java.awt.geom.CubicCurve2D$Float.x1
java.awt.geom.CubicCurve2D$Float.x2
java.awt.geom.CubicCurve2D$Float.y1
java.awt.geom.CubicCurve2D$Float.y2
java.awt.geom.Ellipse2D$Double.height
java.awt.geom.Ellipse2D$Double.width
java.awt.geom.Ellipse2D$Double.x
java.awt.geom.Ellipse2D$Double.y
java.awt.geom.Ellipse2D$Float.height
java.awt.geom.Ellipse2D$Float.width
java.awt.geom.Ellipse2D$Float.x
java.awt.geom.Ellipse2D$Float.y
java.awt.geom.Line2D$Double.x1
java.awt.geom.Line2D$Double.x2
java.awt.geom.Line2D$Double.y1
java.awt.geom.Line2D$Double.y2
java.awt.geom.Line2D$Float.x1
java.awt.geom.Line2D$Float.x2
java.awt.geom.Line2D$Float.y1
java.awt.geom.Line2D$Float.y2
java.awt.geom.Point2D$Double.x
java.awt.geom.Point2D$Double.y
java.awt.geom.Point2D$Float.x
java.awt.geom.Point2D$Float.y
java.awt.geom.QuadCurve2D$Double.ctrlx
java.awt.geom.QuadCurve2D$Double.ctrly
java.awt.geom.QuadCurve2D$Double.x1
java.awt.geom.QuadCurve2D$Double.x2
java.awt.geom.QuadCurve2D$Double.y1
java.awt.geom.QuadCurve2D$Double.y2
java.awt.geom.QuadCurve2D$Float.ctrlx
java.awt.geom.QuadCurve2D$Float.ctrly
java.awt.geom.QuadCurve2D$Float.x1
java.awt.geom.QuadCurve2D$Float.x2
java.awt.geom.QuadCurve2D$Float.y1
java.awt.geom.QuadCurve2D$Float.y2
java.awt.geom.Rectangle2D$Double.height
java.awt.geom.Rectangle2D$Double.width
java.awt.geom.Rectangle2D$Double.x
java.awt.geom.Rectangle2D$Double.y
java.awt.geom.Rectangle2D$Float.height
java.awt.geom.Rectangle2D$Float.width
java.awt.geom.Rectangle2D$Float.x
java.awt.geom.Rectangle2D$Float.y
java.awt.geom.RoundRectangle2D$Double.archeight
java.awt.geom.RoundRectangle2D$Double.arcwidth
java.awt.geom.RoundRectangle2D$Double.height
java.awt.geom.RoundRectangle2D$Double.width
java.awt.geom.RoundRectangle2D$Double.x
java.awt.geom.RoundRectangle2D$Double.y
java.awt.geom.RoundRectangle2D$Float.archeight
java.awt.geom.RoundRectangle2D$Float.arcwidth
java.awt.geom.RoundRectangle2D$Float.height
java.awt.geom.RoundRectangle2D$Float.width
java.awt.geom.RoundRectangle2D$Float.x
java.awt.geom.RoundRectangle2D$Float.y
java.beans.beancontext.BeanContextChildSupport.beanContextChildPeer
java.io.InterruptedIOException.bytesTransferred
java.io.InvalidClassException.classname
java.io.OptionalDataException.eof
java.io.OptionalDataException.length
java.io.StreamTokenizer.nval
java.io.StreamTokenizer.sval
java.io.StreamTokenizer.ttype
java.io.WriteAbortedException.detail
java.rmi.RemoteException.detail
java.rmi.activation.ActivationException.detail
java.rmi.server.ServerCloneException.detail
java.sql.DriverPropertyInfo.choices
java.sql.DriverPropertyInfo.description
java.sql.DriverPropertyInfo.name
java.sql.DriverPropertyInfo.required
java.sql.DriverPropertyInfo.value
javax.accessibility.AccessibleAttributeSequence.attributes
javax.accessibility.AccessibleAttributeSequence.endIndex
javax.accessibility.AccessibleAttributeSequence.startIndex
javax.accessibility.AccessibleTextSequence.endIndex
javax.accessibility.AccessibleTextSequence.startIndex
javax.accessibility.AccessibleTextSequence.text
javax.sound.midi.VoiceStatus.active
javax.sound.midi.VoiceStatus.bank
javax.sound.midi.VoiceStatus.channel
javax.sound.midi.VoiceStatus.note
javax.sound.midi.VoiceStatus.program
javax.sound.midi.VoiceStatus.volume
javax.swing.SizeRequirements.alignment
javax.swing.SizeRequirements.maximum
javax.swing.SizeRequirements.minimum
javax.swing.SizeRequirements.preferred
javax.swing.plaf.basic.BasicMenuUI$ChangeHandler.isSelected
javax.swing.plaf.basic.BasicMenuUI$ChangeHandler.menu
javax.swing.plaf.basic.BasicMenuUI$ChangeHandler.ui
javax.swing.plaf.basic.BasicMenuUI$ChangeHandler.wasFocused
javax.swing.text.JTextComponent$KeyBinding.actionName
javax.swing.text.JTextComponent$KeyBinding.key
javax.swing.text.Segment.array
javax.swing.text.Segment.count
javax.swing.text.Segment.offset
javax.swing.text.html.parser.AttributeList.modifier
javax.swing.text.html.parser.AttributeList.name
javax.swing.text.html.parser.AttributeList.next
javax.swing.text.html.parser.AttributeList.type
javax.swing.text.html.parser.AttributeList.value
javax.swing.text.html.parser.AttributeList.values
javax.swing.text.html.parser.ContentModel.content
javax.swing.text.html.parser.ContentModel.next
javax.swing.text.html.parser.ContentModel.type
javax.swing.text.html.parser.DTD.elementHash
javax.swing.text.html.parser.DTD.elements
javax.swing.text.html.parser.DTD.entityHash
javax.swing.text.html.parser.DTD.name
javax.swing.text.html.parser.Element.atts
javax.swing.text.html.parser.Element.content
javax.swing.text.html.parser.Element.data
javax.swing.text.html.parser.Element.exclusions
javax.swing.text.html.parser.Element.inclusions
javax.swing.text.html.parser.Element.index
javax.swing.text.html.parser.Element.name
javax.swing.text.html.parser.Element.oEnd
javax.swing.text.html.parser.Element.oStart
javax.swing.text.html.parser.Element.type
javax.swing.text.html.parser.Entity.data
javax.swing.text.html.parser.Entity.name
javax.swing.text.html.parser.Entity.type
javax.transaction.xa.XAException.errorCode
javax.xml.ws.Holder.value

其中一些显然是WTF。

票数 1
EN

Stack Overflow用户

发布于 2013-06-23 09:43:15

看看java.awt包中的一些几何类型，比如Point的x和y字段。

票数 3
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/17256967

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