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<TITLE>JAVA程序員必讀：基礎(chǔ)篇 ---- |><| 太平洋電腦網(wǎng) -> 網(wǎng)絡(luò)學(xué)院* 開發(fā)教室</TITLE>
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<div align="center" class="title">JAVA程序員必讀：基礎(chǔ)篇（3）語言基礎(chǔ)</div>
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<div align="center"><font color="#666666">編譯：ZSC/太平洋網(wǎng)絡(luò)學(xué)院</font></div>
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<div align="right" class="gray"><a href="mailto:tntst@pconline.com.cn">［責(zé)編:爆破手］</a></div>
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<p class="article"> <b>語言基礎(chǔ)</b> </p>
<p></p>
<p class="article"><b>3.4.6 分支語句</b></p>
<p class="article">JAVA編程語言支持下面的三種分支結(jié)構(gòu)：</p>
<p class="article"><a href="#1">break語句</a></p>
<p class="article">continue語句</p>
<p class="article">return語句 </p>
<dir>
<p class="article">下面逐個介紹：</p>
</dir>
<p class="article"><span class="coffee"> <a name="1"></a>（1）break語句</span></p>
<p class="article"> break語句有兩種形式：未標(biāo)志的和標(biāo)志的。你在前面就已經(jīng)看過了未標(biāo)志的break語句。一個未標(biāo)志的break語句終止swtich語句，控制流程馬上轉(zhuǎn)到switch語句下方的語句。下面的例程BreakDemo，它包含了一個for循環(huán)查找數(shù)組中特定的數(shù)值：
</p>
<p class="article"><span class="blue">public class BreakDemo {</span></p>
<p class="article"><span class="blue"> public static void main(String[]
args) {</span></p>
<p class="article"><span class="blue"> int[] arrayOfInts = { 32, 87,
3, 589, 12, 1076,</span></p>
<p class="article"><span class="blue"> 2000, 8, 622, 127 };</span></p>
<p class="article"><span class="blue"> int searchfor = 12;</span></p>
<p class="article"><span class="blue"> int i = 0;</span></p>
<p class="article"><span class="blue"> boolean foundIt = false;</span></p>
<p class="article"><span class="blue"> for ( ; i < arrayOfInts.length;
i++) {</span></p>
<p class="article"><span class="blue"> if (arrayOfInts[i] == searchfor)
{</span></p>
<p class="article"><span class="blue"> foundIt = true;</span></p>
<p class="article"><span class="blue"> break;</span></p>
<p class="article"><span class="blue"> }</span></p>
<p class="article"><span class="blue"> }</span></p>
<p></p>
<p class="article"><span class="blue"> if (foundIt) {</span></p>
<p class="article"><span class="blue"> System.out.println("Found "
+ searchfor + " at index " + i);</span></p>
<p class="article"><span class="blue"> } else {</span></p>
<p class="article"><span class="blue"> System.out.println(searchfor
+ "not in the array");</span></p>
<p class="article"><span class="blue"> }</span></p>
<p class="article"><span class="blue"> }</span></p>
<p class="article"><span class="blue">}</span></p>
<p class="article"> 當(dāng)數(shù)值被找到的時候，這個break語句終止了for循環(huán)?？刂屏鞒叹娃D(zhuǎn)到for語句的下面的語句繼續(xù)執(zhí)行。這個程序的輸出為：
Found 12 at index 4</p>
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