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java.lang</FONT>
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ClassStackTraceElement</H2>
<PRE>
<AHREF="../../java/lang/Object.html"title="classinjava.lang">java.lang.Object</A>
<IMGSRC="http://www.163design.net/resources/inherit.gif"ALT="extendedby"><B>java.lang.StackTraceElement</B>
</PRE>
<DL>
<DT><B>AllImplementedInterfaces:</B><DD><AHREF="../../java/io/Serializable.html"title="interfaceinjava.io">Serializable</A></DD>
</DL>
<HR>
<DL>
<DT>publicfinalclass<B>StackTraceElement</B><DT>extends<AHREF="../../java/lang/Object.html"title="classinjava.lang">Object</A><DT>implements<AHREF="../../java/io/Serializable.html"title="interfaceinjava.io">Serializable</A></DL>
<P>
Anelementinastacktrace,asreturnedby<AHREF="../../java/lang/Throwable.html#getStackTrace()"><CODE>Throwable.getStackTrace()</CODE></A>.Eachelementrepresentsasinglestackframe.
Allstackframesexceptfortheoneatthetopofthestackrepresent
amethodinvocation.Theframeatthetopofthestackrepresentsthe
theexecutionpointatwhichthestacktracewasgenerated.Typically,
thisisthepointatwhichthethrowablecorrespondingtothestacktrace
wascreated.
仓库跟踪中的元素,经由过程Throwable.getStackTrace()前往。每一个元素暗示单一的仓库帧。除仓库最顶真个帧,每一个仓库帧都暗示一次办法挪用。
仓库顶部的帧暗示仓库发生的实行点。一般,这是throwable响应仓库跟踪的创立点。
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>1.4</DD>
<DT><B>SeeAlso:</B><DD><AHREF="../../serialized-form.html#java.lang.StackTraceElement">SerializedForm</A></DL>
<HR>
<P>
<!--========NESTEDCLASSSUMMARY========-->
<!--===========FIELDSUMMARY===========-->
<!--========CONSTRUCTORSUMMARY========-->
<!--==========METHODSUMMARY===========-->
<ANAME="method_summary"><!----></A>
<TABLEBORDER="1"WIDTH="100%"CELLPADDING="3"CELLSPACING="0"SUMMARY="">
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<B>MethodSummary</B></FONT></TD>
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<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE>boolean</CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#equals(java.lang.Object)">equals</A></B>(<AHREF="../../java/lang/Object.html"title="classinjava.lang">Object</A>obj)</CODE>
<BR>
Returnstrueifthespecifiedobjectisanother
<tt>StackTraceElement</tt>instancerepresentingthesameexecution
pointasthisinstance.
假如指定的对象是另外一个StackTraceElement实例,同该实例暗示不异的实行点,前往true。</TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE><AHREF="../../java/lang/String.html"title="classinjava.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#getClassName()">getClassName</A></B>()</CODE>
<BR>
Returnsthefullyqualifiednameoftheclasscontainingthe
executionpointrepresentedbythisstacktraceelement.
前往包括以后仓库跟踪元素暗示的实行点的类的全名。</TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE><AHREF="../../java/lang/String.html"title="classinjava.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#getFileName()">getFileName</A></B>()</CODE>
<BR>
Returnsthenameofthesourcefilecontainingtheexecutionpoint
representedbythisstacktraceelement.
前往包括以后仓库跟踪元素暗示的实行点的源文件名。</TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE>int</CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#getLineNumber()">getLineNumber</A></B>()</CODE>
<BR>
Returnsthelinenumberofthesourcelinecontainingtheexecution
pointrepresentedbythisstacktraceelement.
前往包括以后仓库跟踪元素暗示的实行点的源代码行号。</TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE><AHREF="../../java/lang/String.html"title="classinjava.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#getMethodName()">getMethodName</A></B>()</CODE>
<BR>
Returnsthenameofthemethodcontainingtheexecutionpoint
representedbythisstacktraceelement.
前往包括以后仓库跟踪元素暗示的实行点的办法名。</TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE>int</CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#hashCode()">hashCode</A></B>()</CODE>
<BR>
Returnsahashcodevalueforthisstacktraceelement.
前往以后仓库跟踪元素的hash码值。</TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE>boolean</CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#isNativeMethod()">isNativeMethod</A></B>()</CODE>
<BR>
Returnstrueifthemethodcontainingtheexecutionpoint
representedbythisstacktraceelementisanativemethod.
假如包括以后仓库跟踪元素暗示的实行点的办法是一个当地办法,前往true。</TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TDALIGN="right"VALIGN="top"WIDTH="1%"><FONTSIZE="-1">
<CODE><AHREF="../../java/lang/String.html"title="classinjava.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><AHREF="../../java/lang/StackTraceElement.html#toString()">toString</A></B>()</CODE>
<BR>
Returnsastringrepresentationofthisstacktraceelement.
前往以后仓库跟踪元素的字符串情势。</TD>
</TR>
</TABLE>
<ANAME="methods_inherited_from_class_java.lang.Object"><!----></A>
<TABLEBORDER="1"WIDTH="100%"CELLPADDING="3"CELLSPACING="0"SUMMARY="">
<TRBGCOLOR="#EEEEFF"CLASS="TableSubHeadingColor">
<TD><B>Methodsinheritedfromclassjava.lang.<AHREF="../../java/lang/Object.html"title="classinjava.lang">Object</A></B></TD>
</TR>
<TRBGCOLOR="white"CLASS="TableRowColor">
<TD><CODE><AHREF="../../java/lang/Object.html#clone()">clone</A>,<AHREF="../../java/lang/Object.html#finalize()">finalize</A>,<AHREF="../../java/lang/Object.html#getClass()">getClass</A>,<AHREF="../../java/lang/Object.html#notify()">notify</A>,<AHREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>,<AHREF="../../java/lang/Object.html#wait()">wait</A>,<AHREF="../../java/lang/Object.html#wait(long)">wait</A>,<AHREF="../../java/lang/Object.html#wait(long,int)">wait</A></CODE></TD>
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<P>
<!--============FIELDDETAIL===========-->
<!--=========CONSTRUCTORDETAIL========-->
<!--============METHODDETAIL==========-->
<ANAME="method_detail"><!----></A>
<TABLEBORDER="1"WIDTH="100%"CELLPADDING="3"CELLSPACING="0"SUMMARY="">
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<TDCOLSPAN=1><FONTSIZE="+2">
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</TR>
</TABLE>
<ANAME="getFileName()"><!----></A><H3>
getFileName</H3>
<PRE>
public<AHREF="../../java/lang/String.html"title="classinjava.lang">String</A><B>getFileName</B>()</PRE>
<DL>
<DD>Returnsthenameofthesourcefilecontainingtheexecutionpoint
representedbythisstacktraceelement.Generally,thiscorresponds
tothe<tt>SourceFile</tt>attributeoftherelevant<tt>class</tt>
file(asper<i>TheJavaVirtualMachineSpecification</i>,Section
4.7.7).Insomesystems,thenamemayrefertosomesourcecodeunit
otherthanafile,suchasanentryinsourcerepository.
前往包括以后仓库跟踪元素暗示的实行点的源文件名。一般,相称于相干class文件
(JVM标准,4.7.7节)SourceFile属性。的在某些体系中,该称号大概指向一些源代码单位而不是文件,好比源码堆栈中的某项。
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>thenameofthefilecontainingtheexecutionpoint
representedbythisstacktraceelement,or<tt>null</tt>if
thisinformationisunavailable.
包括以后仓库跟踪元素暗示的实行点的源文件名,假如信息不成用,前往null。</DL>
</DD>
</DL>
<HR>
<ANAME="getLineNumber()"><!----></A><H3>
getLineNumber</H3>
<PRE>
publicint<B>getLineNumber</B>()</PRE>
<DL>
<DD>Returnsthelinenumberofthesourcelinecontainingtheexecution
pointrepresentedbythisstacktraceelement.Generally,thisis
derivedfromthe<tt>LineNumberTable</tt>attributeoftherelevant
<tt>class</tt>file(asper<i>TheJavaVirtualMachine
Specification</i>,Section4.7.8).
前往包括以后仓库跟踪元素暗示的实行点的源代码行号。一般,由关class文件
(JVM标准,4.7.8节)LineNumberTable属性获得。
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>thelinenumberofthesourcelinecontainingtheexecution
pointrepresentedbythisstacktraceelement,oranegative
numberifthisinformationisunavailable.
包括以后仓库跟踪元素暗示的实行点的源代码行号,假如信息不成用,前往正数。</DL>
</DD>
</DL>
<HR>
<ANAME="getClassName()"><!----></A><H3>
getClassName</H3>
<PRE>
public<AHREF="../../java/lang/String.html"title="classinjava.lang">String</A><B>getClassName</B>()</PRE>
<DL>
<DD>Returnsthefullyqualifiednameoftheclasscontainingthe
executionpointrepresentedbythisstacktraceelement.
前往包括以后仓库跟踪元素暗示的实行点的类的全名。
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>thefullyqualifiednameofthe<tt>Class</tt>containing
theexecutionpointrepresentedbythisstacktraceelement.
包括以后仓库跟踪元素暗示的实行点的类的全名。</DL>
</DD>
</DL>
<HR>
<ANAME="getMethodName()"><!----></A><H3>
getMethodName</H3>
<PRE>
public<AHREF="../../java/lang/String.html"title="classinjava.lang">String</A><B>getMethodName</B>()</PRE>
<DL>
<DD>Returnsthenameofthemethodcontainingtheexecutionpoint
representedbythisstacktraceelement.Iftheexecutionpointis
containedinaninstanceorclassinitializer,thismethodwillreturn
theappropriate<i>specialmethodname</i>,<tt><init></tt>or
<tt><clinit></tt>,asperSection3.9of<i>TheJavaVirtual
MachineSpecification</i>.
前往包括以后仓库跟踪元素暗示的实行点的办法名。假如实行点包括在实例或类初始化器中,
该办法依据JVM标准3.9节前往符合的特定办法名。
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>thenameofthemethodcontainingtheexecutionpoint
representedbythisstacktraceelement.
包括以后仓库跟踪元素暗示的实行点的办法名。</DL>
</DD>
</DL>
<HR>
<ANAME="isNativeMethod()"><!----></A><H3>
isNativeMethod</H3>
<PRE>
publicboolean<B>isNativeMethod</B>()</PRE>
<DL>
<DD>Returnstrueifthemethodcontainingtheexecutionpoint
representedbythisstacktraceelementisanativemethod.
假如包括以后仓库跟踪元素暗示的实行点的办法是一个当地办法,前往true。
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><tt>true</tt>ifthemethodcontainingtheexecutionpoint
representedbythisstacktraceelementisanativemethod.
假如包括以后仓库跟踪元素暗示的实行点的办法是一个当地办法,前往true。</DL>
</DD>
</DL>
<HR>
<ANAME="toString()"><!----></A><H3>
toString</H3>
<PRE>
public<AHREF="../../java/lang/String.html"title="classinjava.lang">String</A><B>toString</B>()</PRE>
<DL>
<DD>Returnsastringrepresentationofthisstacktraceelement.The
formatofthisstringdependsontheimplementation,butthefollowing
examplesmayberegardedastypical:
前往以后仓库跟踪元素的字符串情势。字符串的格局依附于完成,可是一般以以下实例为准:
<ul>
<li>
<tt>"MyClass.mash(MyClass.java:9)"</tt>-Here,<tt>"MyClass"</tt>
isthe<i>fully-qualifiedname</i>oftheclasscontainingthe
executionpointrepresentedbythisstacktraceelement,
<tt>"mash"</tt>isthenameofthemethodcontainingtheexecution
point,<tt>"MyClass.java"</tt>isthesourcefilecontainingthe
executionpoint,and<tt>"9"</tt>isthelinenumberofthesource
linecontainingtheexecutionpoint.
这里,“MyClass”是包括以后仓库跟踪元素暗示的实行点的类的全名,“mash”
是包括实行点的办法名,“MyClass.java”是包括实行点的源文件,“9”是包括实行点的源代码行号。
<li>
<tt>"MyClass.mash(MyClass.java)"</tt>-Asabove,buttheline
numberisunavailable.
同以上,但行号不成用。
<li>
<tt>"MyClass.mash(UnknownSource)"</tt>-Asabove,butneither
thefilenamenorthelinenumberareavailable.
同以上,但文件名和行号均不成用。
<li>
<tt>"MyClass.mash(NativeMethod)"</tt>-Asabove,butneither
thefilenamenorthelinenumberareavailable,andthemethod
containingtheexecutionpointisknowntobeanativemethod.
同以上,但文件名和行号均不成用,包括实行点的办法是当地办法。。
</ul>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><AHREF="../../java/lang/Object.html#toString()">toString</A></CODE>inclass<CODE><AHREF="../../java/lang/Object.html"title="classinjava.lang">Object</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>astringrepresentationoftheobject.<DT><B>SeeAlso:</B><DD><AHREF="../../java/lang/Throwable.html#printStackTrace()"><CODE>Throwable.printStackTrace()</CODE></A></DL>
</DD>
</DL>
<HR>
<ANAME="equals(java.lang.Object)"><!----></A><H3>
equals</H3>
<PRE>
publicboolean<B>equals</B>(<AHREF="../../java/lang/Object.html"title="classinjava.lang">Object</A>obj)</PRE>
<DL>
<DD>Returnstrueifthespecifiedobjectisanother
<tt>StackTraceElement</tt>instancerepresentingthesameexecution
pointasthisinstance.Twostacktraceelements<tt>a</tt>and
<tt>b</tt>areequalifandonlyif:
假如指定的对象是另外一个StackTraceElement实例,同该实例暗示不异的实行点,前往true。
只要当两个仓库跟踪元素a和b满意以下前提时以为相称:
<pre>
equals(a.getFileName(),b.getFileName())&&
a.getLineNumber()==b.getLineNumber())&&
equals(a.getClassName(),b.getClassName())&&
equals(a.getMethodName(),b.getMethodName())
</pre>
where<tt>equals</tt>isdefinedas:
此处,equals界说为:
<pre>
staticbooleanequals(Objecta,Objectb){
returna==b||(a!=null&&a.equals(b));
}
</pre>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><AHREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A></CODE>inclass<CODE><AHREF="../../java/lang/Object.html"title="classinjava.lang">Object</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>obj</CODE>-theobjecttobecomparedwiththisstacktraceelement.要同以后仓库跟踪元素对照的对象。
<DT><B>Returns:</B><DD>trueifthespecifiedobjectisanother
<tt>StackTraceElement</tt>instancerepresentingthesame
executionpointasthisinstance.
假如指定的对象是另外一个StackTraceElement实例,同该实例暗示不异的实行点,前往true。<DT><B>SeeAlso:</B><DD><AHREF="../../java/lang/Object.html#hashCode()"><CODE>Object.hashCode()</CODE></A>,
<AHREF="../../java/util/Hashtable.html"title="classinjava.util"><CODE>Hashtable</CODE></A></DL>
</DD>
</DL>
<HR>
<ANAME="hashCode()"><!----></A><H3>
hashCode</H3>
<PRE>
publicint<B>hashCode</B>()</PRE>
<DL>
<DD>Returnsahashcodevalueforthisstacktraceelement.
前往以后仓库跟踪元素的hash码值。
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><AHREF="../../java/lang/Object.html#hashCode()">hashCode</A></CODE>inclass<CODE><AHREF="../../java/lang/Object.html"title="classinjava.lang">Object</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>ahashcodevalueforthisobject.
以后仓库跟踪元素的hash码值。<DT><B>SeeAlso:</B><DD><AHREF="../../java/lang/Object.html#equals(java.lang.Object)"><CODE>Object.equals(java.lang.Object)</CODE></A>,
<AHREF="../../java/util/Hashtable.html"title="classinjava.util"><CODE>Hashtable</CODE></A></DL>
</DD>
</DL>
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但是我同意你的观点,对于大型项目来说,应该是采用框架的一部分,根据功能的不同而改进,欢迎你能再提出些宝贵意见,我会多多学习的。说到jbuilder,我可能是个人感觉,用的时候确实没有vs爽,我最喜欢的IDE是netbeans,谢谢。 |
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