首页 \ 问答 \ 如何在Java中销毁String池中的引用？(How can I destroy reference from String pool in Java?)

如何在Java中销毁String池中的引用？(How can I destroy reference from String pool in Java?)

 字符串是不可变的。 当我宣布： 
 

String a = "abc";
String a1 = "abc";

 

 两个对象都指向相同的位置。 那么如何从String池中销毁这个“abc”引用呢？ 
 

 我的用例是我正在开发一个内存较少的硬件应用程序，为此，我需要清除String池中的引用以节省内存。 

Strings are immutable. When I declare:
 

String a = "abc";
String a1 = "abc";

 

Both objects refer to same location. So how can I destroy this "abc" reference from String pool?
 

My use case is that I am developing a hardware application with less memory and for this, I need to clear the references from String pool to save memory.

原文：https://stackoverflow.com/questions/38584771
更新时间：2023-03-11 19:03

最满意答案

 托马斯是对的，但有一个更好的解决方案： 
 

<style type="text/css">

    #content {width: 500px;}

    .align-left { float: left; }
    .align-right { float: right; }

</style>

<div id="content">

    <img class="align-left" src="link to your image" alt="description of your image" width="100" height="100" />
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

    <img class="align-right" src="link to your image" alt="description of your image" width="100" height="100" />
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

</div><!-- end content -->

 

 在这种情况下，class比ID更有用。 

Thomas is right but there's a even better solution:
 

<style type="text/css">

    #content {width: 500px;}

    .align-left { float: left; }
    .align-right { float: right; }

</style>

<div id="content">

    <img class="align-left" src="link to your image" alt="description of your image" width="100" height="100" />
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

    <img class="align-right" src="link to your image" alt="description of your image" width="100" height="100" />
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

</div><!-- end content -->

 

class are more usefull than ID in this case.

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