blocks|key|743498|text|看一看甲骨文的Java™+Tutorials。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|743499|但基本上，作为dacwe+said，使用break。|style|CODE|743500|如果可以，避免使用break并将检查作为while循环的条件，或者使用do+while循环之类的东西通常会更清楚。然而，这并不总是可能的。|743501|entityMap|0|LINK|mutability|MUTABLE|url|http://download.oracle.com/javase/tutorial/java/nutsandbolts/branch.html|1|https://stackoverflow.com/a/7951703/642706^0|7|F|0|0|K|5|7|A|1|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@$A|Y|B|Z|F|G]]|9|@$A|10|B|11|1|12]]|C|$]]|$1|H|3|I|5|6|7|13|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]]]

Take a look at the <a href="http://download.oracle.com/javase/tutorial/java/nutsandbolts/branch.html" rel="nofollow noreferrer">Java™ Tutorials</a> by Oracle.

But basically, as <a href="https://stackoverflow.com/a/7951703/642706">dacwe said</a>, use <code>break</code>.

If you can it is often clearer to avoid using break and put the check as a condition of the while loop, or using something like a do while loop. This isn't always possible though.

blocks|key|527028|text|while(obj+!=+null){
++//+statements.
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|527029|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>while(obj != null){
 // statements.
}
</code></pre>

blocks|key|527062|text|break就是你要找的东西：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|527063|while+(true)+{
++++if+(obj+==+null)+break;
}|code-block|syntax|javascript|527064|或者，重构您的循环：|527065|while+(obj+!=+null)+{
++++//+do+stuff
}|527066|或者：|527067|do+{
++++//+do+stuff
}+while+(obj+!=+null);|527068|entityMap^0|0|5|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|T|$]]

<code>break</code> is what you're looking for:

<pre><code>while (true) {
 if (obj == null) break;
}
</code></pre>

alternatively, restructure your loop:

<pre><code>while (obj != null) {
 // do stuff
}
</code></pre>

or:

<pre><code>do {
 // do stuff
} while (obj != null);
</code></pre>

blocks|key|743636|text|在我的代码中找到一个带有while(true)的while...do构造会让我大失所望。改用标准的while循环：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|743637|while+(obj+!=+null){
++++...
}|code-block|syntax|javascript|743638|看看雅科比在他的answer中提供的链接，这个也是。我是认真的。|743639|The+while+and+do-while+Statements|743640|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/7951690/exit-terminate-a-while-loop/7951709#7951709|1|http://download.oracle.com/javase/tutorial/java/nutsandbolts/while.html^0|C|B|O|A|1D|5|0|0|8|6|0|0|0|X|1|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|D|@$9|17|A|18|1|19]]|E|$]]|$1|M|3|N|5|6|7|1A|8|@]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|O|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]|W|$5|R|S|T|E|$U|X]]]]

Finding a <code>while...do</code> construct with <code>while(true)</code> in my code would make my eyes bleed. Use a standard <code>while</code> loop instead: 

<pre><code>while (obj != null){
 ...
}
</code></pre>

And take a look at the link Yacoby provided in his <a href="https://stackoverflow.com/questions/7951690/exit-terminate-a-while-loop/7951709#7951709">answer</a>, and this one too. Seriously. 

<a href="http://download.oracle.com/javase/tutorial/java/nutsandbolts/while.html" rel="nofollow noreferrer">The while and do-while Statements</a>

blocks|key|527156|text|您可以在while()检查中使用与任何逻辑检查中相同的规则执行多个条件逻辑测试。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|527157|while+(+obj+!=+null+)+{++
++++//+do+stuff++
}|code-block|syntax|javascript|527158|工作，就像这样|527159|while+(+value+>+5+&&+value+<+10+)+{++
++++//+do+stuff++
}++|527160|是有效的。在循环中的每次迭代中都会检查条件。只要有一个不匹配，while()循环就会退出。你也可以使用break；|527161|while+(+value+>+5+)+{++
++++if+(+value+>+10+)+{+break;+}++
++++...++
}++|527162|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

You can do multiple condition logical tests within the while() check using the same rules as within any logical check.

<pre><code>while ( obj != null ) { 
 // do stuff 
}
</code></pre>

works, as does

<pre><code>while ( value &gt; 5 &amp;&amp; value &lt; 10 ) { 
 // do stuff 
} 
</code></pre>

are valid. The conditionals are checked on each iteration through the loop. As soon as one doesn't match, the while() loop is exited. You can also use break;

<pre><code>while ( value &gt; 5 ) { 
 if ( value &gt; 10 ) { break; } 
 ... 
} 
</code></pre>

blocks|key|527209|text|您可以使用上面的答案中已经提到的"break“。如果你需要返回一些值。你可以像下面的代码一样使用"return“：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|527210|+while(true){
+++++++if(some+condition){
++++++++++++do+something;
++++++++++++return;}
++++++++else{
++++++++++++do+something;
++++++++++++return;}
++++++++++++}|code-block|syntax|javascript|527211|在本例中，this+while位于一个返回某种值的方法下。|527212|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can use "break", already mentioned in the answers above. If you need to return some values. You can use "return" like the code below: 

<pre><code> while(true){
 if(some condition){
 do something;
 return;}
 else{
 do something;
 return;}
 }
</code></pre>

in this case, this while is in under a method which is returning some kind of values.

blocks|key|743758|text|您可以使用"+break“来中断循环，这将不允许循环处理更多的条件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|743759|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You can use "break" to break the loop, which will not allow the loop to process more conditions

blocks|key|743833|text|要退出while循环，请使用Break;+This+will+not+allow+To+loop来处理放置在其中的任何条件，请确保将其放在循环中，因为您不能将其放在循环之外|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|743834|entityMap^0|E|6|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

To exit a while loop, use <code>Break;</code> This will not allow to loop to process any conditions that are placed inside, make sure to have this inside the loop, as you cannot place it outside the loop

What is the best way to exit/terminate a while loop in Java?

For example, my code is currently as follows:

<pre><code>while(true){
 if(obj == null){

 // I need to exit here

 }
}
</code></pre>

How do I exit a while loop in Java?

Java

在Java中退出/终止while循环的最佳方式是什么？例如，我的代码当前如下所示：while(true){    if(obj == null){        // I need to exit here    }}

问如何在Java中退出while循环？
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