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📁 Jvm 规范说明。The Java Virtual Machine was designed to support the Java programming language. Some concep

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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.doc113.html">Prev</a> | <a href="Instructions2.doc115.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><hr><br> <a name="invokevirtual"></a><h2>invokevirtual</h2><a name="170580"></a>Otherwise, if the specified method exists but is a class (<code>static</code>) method, the <i>invokevirtual</i> instruction throws an <code>Incompatible-Class-ChangeError</code>.<p><a name="68974"></a>Otherwise, if the specified method is <code>abstract</code>, <i>invokevirtual</i> throws an <code>AbstractMethodError</code>.<p><a name="68975"></a>Otherwise, if the specified method is <code>native</code> and the code that implements the method cannot be loaded or linked, <i>invokevirtual</i> throws an <code>UnsatisfiedLinkError</code>.<p><a name="invokevirtual.Runtime"></a><b>Runtime Exception</b><br><a name="68977"></a>Otherwise, if <i>objectref</i> is <code>null</code>, the <i>invokevirtual</i> instruction throws a <code>NullPointerException</code>. <p><hr><!-- This inserts footnotes--><p><a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc113.html">Prev</a> | <a href="Instructions2.doc115.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 &#169 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>

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