📄 classnotfoundexception.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:35:16 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class ClassNotFoundException</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/ClassNotFoundException.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../java/lang/ClassCastException.html"><B>PREV CLASS</B></A> <A HREF="../../java/lang/CloneNotSupportedException.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="ClassNotFoundException.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.lang</FONT><BR>Class ClassNotFoundException</H2><PRE><A HREF="../../java/lang/Object.html">java.lang.Object</A> | +--<A HREF="../../java/lang/Throwable.html">java.lang.Throwable</A> | +--<A HREF="../../java/lang/Exception.html">java.lang.Exception</A> | +--<B>java.lang.ClassNotFoundException</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../java/io/Serializable.html">Serializable</A></DD></DL><HR><DL><DT>public class <B>ClassNotFoundException</B><DT>extends <A HREF="../../java/lang/Exception.html">Exception</A></DL><P>Thrown when an application tries to load in a class through its string name using: <ul> <li>The <code>forName</code> method in class <code>Class</code>. <li>The <code>findSystemClass</code> method in class <code>ClassLoader</code> . <li>The <code>loadClass</code> method in class <code>ClassLoader</code>. </ul> <p> but no definition for the class with the specifed name could be found.<P><DL><DT><B>Since: </B><DD>JDK1.0</DD><DT><B>See Also: </B><DD><A HREF="../../java/lang/Class.html#forName(java.lang.String)"><CODE>Class.forName(java.lang.String)</CODE></A>, <A HREF="../../java/lang/ClassLoader.html#findSystemClass(java.lang.String)"><CODE>ClassLoader.findSystemClass(java.lang.String)</CODE></A>, <A HREF="../../java/lang/ClassLoader.html#loadClass(java.lang.String, boolean)"><CODE>ClassLoader.loadClass(java.lang.String, boolean)</CODE></A>, <A HREF="../../serialized-form.html#java.lang.ClassNotFoundException">Serialized Form</A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../java/lang/ClassNotFoundException.html#ClassNotFoundException()">ClassNotFoundException</A></B>()</CODE><BR> Constructs a <code>ClassNotFoundException</code> with no detail message.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../java/lang/ClassNotFoundException.html#ClassNotFoundException(java.lang.String)">ClassNotFoundException</A></B>(<A HREF="../../java/lang/String.html">String</A> s)</CODE><BR> Constructs a <code>ClassNotFoundException</code> with the specified detail message.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../java/lang/ClassNotFoundException.html#ClassNotFoundException(java.lang.String, java.lang.Throwable)">ClassNotFoundException</A></B>(<A HREF="../../java/lang/String.html">String</A> s, <A HREF="../../java/lang/Throwable.html">Throwable</A> ex)</CODE><BR> Constructs a <code>ClassNotFoundException</code> with the specified detail message and optional exception that was raised while loading the class.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/Throwable.html">Throwable</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassNotFoundException.html#getException()">getException</A></B>()</CODE><BR> Returns the exception that was raised if an error occurred while attempting to load the class.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassNotFoundException.html#printStackTrace()">printStackTrace</A></B>()</CODE><BR> Prints the stack backtrace.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassNotFoundException.html#printStackTrace(java.io.PrintStream)">printStackTrace</A></B>(<A HREF="../../java/io/PrintStream.html">PrintStream</A> ps)</CODE><BR> Prints the stack backtrace to the specified print stream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassNotFoundException.html#printStackTrace(java.io.PrintWriter)">printStackTrace</A></B>(<A HREF="../../java/io/PrintWriter.html">PrintWriter</A> pw)</CODE><BR> Prints the stack backtrace to the specified print writer.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Throwable"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.<A HREF="../../java/lang/Throwable.html">Throwable</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/lang/Throwable.html#fillInStackTrace()">fillInStackTrace</A>, <A HREF="../../java/lang/Throwable.html#getLocalizedMessage()">getLocalizedMessage</A>, <A HREF="../../java/lang/Throwable.html#getMessage()">getMessage</A>, <A HREF="../../java/lang/Throwable.html#toString()">toString</A></CODE></TD></TR></TABLE>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -