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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>
<p></p>
<p class="article"><b>4.1.1.2 實例化對象</b></p>
<p class="article"> 為了創建一個對象你必須用new來實例化它。New運算符是通過為新對象分配內存來實例化一個類的。這個new運算符需要一個后綴參數，即構造函數的一個調用。構造函數的名字提供了要初始化類的名字。構造函數初始化了新的對象。</p>
<p class="article">New運算符號返回一個引用給它創建的對象的。通常，這個引用被賦值為適當類型的變量。</p>
<p></p>
<p class="article"><b>4.1.1.3 初始化對象</b></p>
<p class="article"> 以下是Point類的代碼： </p>
<p class="article">public class Point {</p>
<p class="article"> public int x = 0;</p>
<p class="article"> public int y = 0;</p>
<p class="article"> //一個構造函數</p>
<p class="article"> public Point(int x, int y) {</p>
<p class="article"> this.x = x;</p>
<p class="article"> this.y = y;</p>
<p class="article"> }</p>
<p class="article">}</p>
<p class="article"> 這個類包含了一個構造函數。你可以識別這個構造函數因為它跟類的名字是相同名字的，它沒有任何的返回類型。這個在Point類中的構造函數有兩個整型參數，它是由代碼(int
x, int y)來定義的。下面的整數23和94就是這個參數的數值： </p>
<p class="article">Point origin_one = new Point(23, 94);</p>
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