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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.doc85.html">Prev</a> | <a href="Instructions2.doc87.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><hr><br> <a name="iastore"></a><h2>iastore</h2><a name="iastore.Operation"></a><b>Operation</b><br><a name="68470"></a>Store into <code>int</code> array<p><Table Border="3"><tr><td><a name="68469"></a> <i>iastore</i><td><a name="87568"></a> </Table><Table><tr><td></Table><p><a name="iastore.Forms"></a><b>Forms</b><br><a name="68471"></a><i>iastore</i> = 79 (0x4f)<p><a name="iastore.Stack"></a><b>Stack</b><br><a name="68472"></a>..., <i>arrayref</i>, <i>index</i>, <i>value</i> <img src="chars/arrwdbrt.gif"> ...<p><a name="iastore.Description"></a><b>Description</b><br><a name="68473"></a>The <i>arrayref</i> must be of type <code>reference</code> and must refer to an array whose components are of type <code>int</code>. Both <i>index</i> and <i>value</i> must be of type <code>int</code>. The <i>arrayref</i>, <i>index</i>, and <i>value</i> are popped from the operand stack. The <code>int</code> <i>value</i> is stored as the component of the array indexed by <i>index</i>. <p><a name="iastore.Runtime"></a><b>Runtime Exceptions</b><br><a name="68475"></a>If <i>arrayref</i><em> </em>is <code>null</code>, <i>iastore</i> throws a <code>NullPointerException</code>. <p><a name="68476"></a>Otherwise, if <i>index</i> is not within the bounds of the array referenced by <i>arrayref</i>, the <i>iastore</i> instruction throws an <code>ArrayIndexOutOfBoundsException</code>.<p><hr><!-- This inserts footnotes--><p><a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc85.html">Prev</a> | <a href="Instructions2.doc87.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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