blocks|key|4493300|text|礼貌地作为垃圾收集器删除对象的唯一真正方法是删除所有可用于访问该对象的引用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4493301|Object+o+=+new+Object();
o+=+null;+//+at+this+point+GC+may+remove+the+object.|code-block|syntax|javascript|4493302|要强制执行该过程，可以尝试调用System.gc()。但请记住，这并不能保证您的对象会在这次GC迭代中被真正删除。|offset|length|style|CODE|4493303|entityMap^0|0|0|F|B|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

The only real way to politely as the garbage collector to remove the object is to remove all references that can be used to access it. 

<pre><code>Object o = new Object();
o = null; // at this point GC may remove the object.
</code></pre>

To force the process you can try to call <code>System.gc()</code>. But remember that it does not guarantee that your object will be really deleted at this iteration of GC.

blocks|key|956215|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|956216|有什么方法可以对对象进行垃圾回收吗？|blockquote|956217|956218|956219|不没有。|956220|一个对象在变得“不可达”后将(可能)被垃圾回收。通过调用System.gc()，可以使垃圾收集器在特定时间运行。然而。允许JVM忽略您的System.gc()调用，在错误的时间运行GC是对资源的浪费。|offset|length|style|CODE|956221|实际上，调用System.gc()来回收单个对象的效率非常低，而且无论如何也不一定会回收它……即使在这一点上它是垃圾。|956222|956223|Java应用程序依赖于在特定时间被垃圾回收的对象，或者依赖于在特定时间运行的终结器，这是错误的。如果您的应用程序设计为以这种方式工作，那么您应该重新设计它。|956224|entityMap^0|0|0|0|0|0|S|B|1W|B|0|6|B|0|0|0^^$0|@$1|2|3|-4|4|5|6|U|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|V|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|W|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|X|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|Y|7|@]|8|@]|9|$]]|$1|H|3|I|4|5|6|Z|7|@$J|10|K|11|L|M]|$J|12|K|13|L|M]]|8|@]|9|$]]|$1|N|3|O|4|5|6|14|7|@$J|15|K|16|L|M]]|8|@]|9|$]]|$1|P|3|-4|4|5|6|17|7|@]|8|@]|9|$]]|$1|Q|3|R|4|5|6|18|7|@]|8|@]|9|$]]|$1|S|3|-4|4|5|6|19|7|@]|8|@]|9|$]]]|T|$]]

<blockquote>
 Is there any method to garbage collect an object?
</blockquote>

No there isn't.

An object will (potentially) be garbage collected after becomes "unreachable". It may be possible to cause the garbage collector to be run at a specific time by calling <code>System.gc()</code>. However. the JVM is allowed to ignore your <code>System.gc()</code> call, and running the GC at the wrong time is a waste of resources. 

Indeed, calling <code>System.gc()</code> to reclaim a single object is horribly inefficient, and won't necessarily reclaim it anyway ... even if it is garbage at that point.

<hr>

It is a mistake for a Java application to depend on objects being garbage collected at a particular time, or on finalizers being run at a particular time. If your application is designed to work that way, you should redesign it.

blocks|key|949590|text|有一个System.gc();方法，它只是给垃圾收集器一个提示给垃圾对象。但是，没有任何方法可以调用，并且立即对对象进行垃圾回收。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|BOLD|entityRanges|data|949591|entityMap^0|3|C|T|2|0^^$0|@$1|2|3|4|5|6|7|I|8|@$9|J|A|K|B|C]|$9|L|A|M|B|D]]|E|@]|F|$]]|$1|G|3|-4|5|6|7|N|8|@]|E|@]|F|$]]]|H|$]]

There is a method <code>System.gc();</code> which just gives a hint to the garbage collector to garbage objects. But no, there is no method which you call and immediately an object is garbage collected.

blocks|key|949642|text|你不应该依赖于图片的System.gc();。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|949643|下面的示例将对对象进行垃圾回收。|949644|bitmap.recycle();+
bitmap+=+null;`+|code-block|syntax|javascript|949645|注意:在某些设备上，System.gc();会明显降低应用程序的运行速度。|949646|entityMap^0|A|C|0|0|0|A|C|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

You shouldn't rely on <code>System.gc();</code> with images. 

The following example will get the object garbage collected. 

<pre><code>bitmap.recycle(); 
bitmap = null;` 
</code></pre>

Note: <code>System.gc();</code> slows down the application noticeably on some devices.

blocks|key|3025474|text|您可以查看this+reply，它显示了如何确保GC至少在使用jlib中的RuntimeUtil.gc()的堆的某些片段上运行：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3025475|+++/**
++++*+This+method+guarantees+that+garbage+collection+is
++++*+done+unlike+<code>{@link+System#gc()}</code>
++++*/
+++public+static+void+gc()+{
+++++Object+obj+=+new+Object();
+++++WeakReference+ref+=+new+WeakReference<Object>(obj);
+++++obj+=+null;
+++++while(ref.get()+!=+null)+{
+++++++System.gc();
+++++}
+++}|code-block|syntax|javascript|3025476|您可以使用类似的技术将obj替换为对要进行gc的对象的引用。|3025477|注意:如果GC从不运行并收集新分配的对象，则该方法将陷入无限循环。|3025478|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/1481178/forcing-garbage-collection-in-java/6915221#6915221^0|5|A|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

You can check <a href="https://stackoverflow.com/questions/1481178/forcing-garbage-collection-in-java/6915221#6915221">this reply</a> which shows how to ensure GC has run at least on some fragment of the heap which uses RuntimeUtil.gc() from the jlibs:

<pre><code> /**
 * This method guarantees that garbage collection is
 * done unlike &lt;code&gt;{@link System#gc()}&lt;/code&gt;
 */
 public static void gc() {
 Object obj = new Object();
 WeakReference ref = new WeakReference&lt;Object&gt;(obj);
 obj = null;
 while(ref.get() != null) {
 System.gc();
 }
 }
</code></pre>

You can use a similar technique to replace obj with a reference to the object you want to gc.

Note: The method will be stuck in an infinite loop if the GC never runs and collects the newly allocated object.

Is there any method to garbage collect an object? As I know <code>finalize()</code> is called just before if any object is going to garbage collected.

Method to garbage collect an object in Java

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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有什么方法可以对对象进行垃圾回收吗？据我所知，如果要对任何对象进行垃圾回收，就会在调用finalize()之前调用它。

问在Java中垃圾回收对象的方法
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