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<div align="center" class="title">JAVA程序員必讀：基礎篇（4）對象和簡單數據對象</div>
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<div align="center"><font color="#666666">編譯：ZSC/太平洋網絡學院</font></div>
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<div align="right" class="gray"><a href="mailto:tntst@pconline.com.cn">［責編:爆破手］</a></div>
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<p class="article"><b>對象和簡單數據對象</b></p>
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<p class="article"><b>4.4.4 復制數組</b></p>
<p class="article"> 使用系統的arraycopy方法來有效地從一個數組復制數據到另外一個數組中去。這個arraycopy方法需要5個參數：
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<p class="article">public static</p>
<p class="article"> void arraycopy(Object source,</p>
<p class="article"> int srcIndex,</p>
<p class="article"> Object dest,</p>
<p class="article"> int destIndex,</p>
<p class="article"> int length）</p>
<p class="article"> 其中兩個Object參數指定了從哪個數組復制以及要復制到哪個數組。三個整型參數指示了每個源數組和目標數組的開始位置，以及要復制的元素的數目。如圖20所示說明了復制是如何發生的：
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<p class="article"><img src="/pcedu/empolder/gj/java/images/10717/Image58.gif" width=458 height=190></p>
<p class="article">（圖20）</p>
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