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<!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 Sat Dec 15 07:40:16 EST 2001 --><TITLE>bcel API: Class ReferenceType</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/ReferenceType.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-all.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></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/apache/bcel/generic/PUTSTATIC.html"><B>PREV CLASS</B></A> <A HREF="../../../../org/apache/bcel/generic/RET.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="ReferenceType.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#fields_inherited_from_class_org.apache.bcel.generic.Type">FIELD</A> | <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">org.apache.bcel.generic</FONT><BR>Class ReferenceType</H2><PRE>java.lang.Object | +--<A HREF="../../../../org/apache/bcel/generic/Type.html">org.apache.bcel.generic.Type</A> | +--<B>org.apache.bcel.generic.ReferenceType</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/bcel/generic/ArrayType.html">ArrayType</A>, <A HREF="../../../../org/apache/bcel/generic/ObjectType.html">ObjectType</A>, <A HREF="../../../../org/apache/bcel/verifier/structurals/UninitializedObjectType.html">UninitializedObjectType</A></DD></DL><HR><DL><DT>public class <B>ReferenceType</B><DT>extends <A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A></DL><P>Super class for objects and arrays.<P><DL><DT><B>Version: </B><DD>$Id: ReferenceType.java,v 1.1.1.1 2001/10/29 20:00:26 jvanzyl Exp $</DD><DT><B>Author: </B><DD><A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A></DD></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="fields_inherited_from_class_org.apache.bcel.generic.Type"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class org.apache.bcel.generic.<A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/apache/bcel/generic/Type.html#BOOLEAN">BOOLEAN</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#BYTE">BYTE</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#CHAR">CHAR</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#DOUBLE">DOUBLE</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#FLOAT">FLOAT</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#INT">INT</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#LONG">LONG</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#NO_ARGS">NO_ARGS</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#NULL">NULL</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#OBJECT">OBJECT</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#SHORT">SHORT</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#signature">signature</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#STRING">STRING</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#STRINGBUFFER">STRINGBUFFER</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#THROWABLE">THROWABLE</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#type">type</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#UNKNOWN">UNKNOWN</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#VOID">VOID</A></CODE></TD></TR></TABLE> <!-- ======== 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 ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected </CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/bcel/generic/ReferenceType.html#ReferenceType(byte, java.lang.String)">ReferenceType</A></B>(byte t, java.lang.String s)</CODE><BR> </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="../../../../org/apache/bcel/generic/ReferenceType.html">ReferenceType</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/bcel/generic/ReferenceType.html#firstCommonSuperclass(org.apache.bcel.generic.ReferenceType)">firstCommonSuperclass</A></B>(<A HREF="../../../../org/apache/bcel/generic/ReferenceType.html">ReferenceType</A> t)</CODE><BR> This commutative operation returns the first common superclass (narrowest ReferenceType referencing a class, not an interface).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/bcel/generic/ReferenceType.html#isAssignmentCompatibleWith(org.apache.bcel.generic.Type)">isAssignmentCompatibleWith</A></B>(<A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A> t)</CODE><BR> Return true iff this is assignment compatible with another type t as defined in the JVM specification; see the AASTORE definition there.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/bcel/generic/ReferenceType.html#isCastableTo(org.apache.bcel.generic.Type)">isCastableTo</A></B>(<A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A> t)</CODE><BR> Return true iff this type is castable to another type t as defined in the JVM specification.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_org.apache.bcel.generic.Type"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class org.apache.bcel.generic.<A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/apache/bcel/generic/Type.html#getArgumentTypes(java.lang.String)">getArgumentTypes</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#getMethodSignature(org.apache.bcel.generic.Type, org.apache.bcel.generic.Type[])">getMethodSignature</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#getReturnType(java.lang.String)">getReturnType</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#getSignature()">getSignature</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#getSize()">getSize</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#getType()">getType</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#getType(java.lang.String)">getType</A>, <A HREF="../../../../org/apache/bcel/generic/Type.html#toString()">toString</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="ReferenceType(byte, java.lang.String)"><!-- --></A><H3>ReferenceType</H3><PRE>protected <B>ReferenceType</B>(byte t, java.lang.String s)</PRE><DL></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="isCastableTo(org.apache.bcel.generic.Type)"><!-- --></A><H3>isCastableTo</H3><PRE>public boolean <B>isCastableTo</B>(<A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A> t)</PRE><DL><DD>Return true iff this type is castable to another type t as defined in the JVM specification. The case where this is Type.NULL is not defined (see the CHECKCAST definition in the JVM specification). However, because e.g. CHECKCAST doesn't throw a ClassCastException when casting a null reference to any Object, true is returned in this case.</DL><HR><A NAME="isAssignmentCompatibleWith(org.apache.bcel.generic.Type)"><!-- --></A><H3>isAssignmentCompatibleWith</H3><PRE>public boolean <B>isAssignmentCompatibleWith</B>(<A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A> t)</PRE><DL><DD>Return true iff this is assignment compatible with another type t as defined in the JVM specification; see the AASTORE definition there.</DL><HR><A NAME="firstCommonSuperclass(org.apache.bcel.generic.ReferenceType)"><!-- --></A><H3>firstCommonSuperclass</H3><PRE>public <A HREF="../../../../org/apache/bcel/generic/ReferenceType.html">ReferenceType</A> <B>firstCommonSuperclass</B>(<A HREF="../../../../org/apache/bcel/generic/ReferenceType.html">ReferenceType</A> t)</PRE><DL><DD>This commutative operation returns the first common superclass (narrowest ReferenceType referencing a class, not an interface). If one of the types is a superclass of the other, the former is returned. If "this" is Type.NULL, then t is returned. If t is Type.NULL, then "this" is returned. If "this" equals t ['this.equals(t)'] "this" is returned. If "this" or t is an ArrayType, then Type.OBJECT is returned. If "this" or t is a ReferenceType referencing an interface, then Type.OBJECT is returned. If not all of the two classes' superclasses cannot be found, "null" is returned. See the JVM specification edition 2, "⌨️ 快捷键说明
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