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8. String、StringBuffer与StringBuilder的区别 - cd's blog
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<h1>8. String、StringBuffer与StringBuilder的区别</h1>
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<span class="date">2016/9/27 11:25 上午</span>
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<span class="posted-in"><a href='Java.html'>Java</a></span>
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<th></th>
<th>String</th>
<th>StringBuffer</th>
<th>StringBuilder</th>
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<tbody>
<tr>
<td>可变性</td>
<td>不可变类</td>
<td>可变</td>
<td>可变</td>
</tr>
<tr>
<td>线程安全</td>
<td>是</td>
<td>是</td>
<td>是</td>
</tr>
<tr>
<td>适用场合</td>
<td>被共享的场合 少量数据</td>
<td>经常修改的场合 避免附加操作 无用对象 提高效率 多线程大量数据</td>
<td>单线程下大量数据</td>
</tr>
<tr>
<td>构建</td>
<td>构造函数 ==赋值</td>
<td>构造函数</td>
<td>构造函数</td>
</tr>
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<td>执行效率</td>
<td>低</td>
<td>中</td>
<td>高</td>
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