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<html><head><title>VM Spec </title></head><body BGCOLOR=#eeeeff text=#000000 LINK=#0000ff VLINK=#000077 ALINK=#ff0000> <a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc106.html">Prev</a> | <a href="Instructions2.doc108.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><hr><br> <a name="invokespecial"></a><h2>invokespecial</h2><a name="68866"></a>If so, then the Java Virtual Machine selects the method with the identical descriptor in the closest superclass, possibly selecting the method just resolved.<p><a name="68867"></a>The resulting method must not be <code><clinit></code>, a class or interface initialization method <a href="Overview.doc.html#12174">(§3.8)</a>. <p><a name="140201"></a>If the method is <code><init></code>, an instance initialization method <a href="Overview.doc.html#12174">(§3.8)</a>, then the method must only be invoked once on an uninitialized object, and before the first backward branch following the execution of the <i>new</i> instruction that allocated the object. <p><a name="140202"></a>Finally, if the method is <code>protected</code> <a href="ClassFile.doc.html#1513">(§4.6)</a>, then it must be either a member of the current class or a member of a superclass of the current class, and the class of <i>objectref</i> must be either the current class or a subclass of the current class.<p><a name="68872"></a>The constant pool entry representing the resolved method includes a direct reference to the code for the method, an unsigned byte <i>nargs </i>that must not be zero, and the method's modifier information (see <a href="ClassFile.doc.html#12725">Table 4.4, "Method access and modifier flags"</a>).<p><a name="68873"></a>The <i>objectref</i> must be of type <code>reference</code> and must be followed on the operand stack by <i>nargs </i>- 1 words of arguments, where the number of words of arguments and the type and order of the values they represent must be consistent with the descriptor of the selected instance method.<p><a name="138167"></a>If the method is <code>synchronized</code>, the monitor associated with <i>objectref</i> is acquired.<p><hr><!-- This inserts footnotes--><p><a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc106.html">Prev</a> | <a href="Instructions2.doc108.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><p><font size=-1>Java Virtual Machine Specification (HTML generated by dkramer on February 25, 1997)<br><i><a href="Copyright.doc.html">Copyright © 1996 Sun Microsystems, Inc.</a>All rights reserved</i><br>Please send any comments or corrections to <a href="mailto:doug.kramer@sun.com">doug.kramer@sun.com</a></font></body></html>⌨️ 快捷键说明
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