blocks|key|3951440|text|在Runtime.exec上|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3951441|尽管可能不是最理想的解决方案，但您可以使用Runtime.getRuntime().exec(someCommand)将shell命令作为单独的Process执行。还有一些重载将参数作为String[]。|3951442|这不是一个简单的解决方案。管理并发Process和防止死锁等不是轻而易举的事情。|3951443|相关问题|3951444|3951445|Is+java+Runtime.exec(String[])+platform+independent?|unordered-list-item|3951446|What+is+the+purpose+of+Process+class+in+Java?|3951447|How+can+I+compile+and+deploy+a+java+class+at+runtime?|3951448|Compiling+a+class+using+Java+code+using+process|3951449|Java:+Executing+a+Java+application+in+a+separate+process|3951450|Running+a+program+from+within+Java+code..|3951451|3951452|3951453|关于排出Process流|3951454|通常，您不能通过waitFor()终止Process；还必须排空它的I/O流以防止死锁。|3951455|来自the+API|3951456|3951457|由于一些本机平台仅为标准输入和输出流提供有限的缓冲区大小，未能及时写入输入流或读取子进程的输出流可能会导致子进程阻塞，甚至死锁。|blockquote|3951458|3951459|3951460|3951461|3951462|Draining+Standard+Error+in+Java|3951463|3951464|3951465|关于Java+6编译器API|3951466|在Java中编译Java源代码的一种选择是使用Java+6+Compiler+API。这需要安装JDK+(不仅仅是JRE)。|3951467|另请参阅|3951468|来自package+javax.tools+|3951469|external+tutorial+article|3951470|的|3951471|interface+JavaCompiler|3951472|3951473|​|3951474|3951475|3951476|Null+Pointer+Exception+while+using+Java+Compiler+API|3951477|3951478|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/javase/6/docs/api/java/lang/Runtime.html#exec%2528java.lang.String%2529|1|http://java.sun.com/javase/6/docs/api/java/lang/Process.html|2|https://stackoverflow.com/questions/1081084/is-java-runtime-execstring-platform-independent|3|https://stackoverflow.com/questions/2798425/what-is-the-purpose-of-process-class-in-java|4|https://stackoverflow.com/questions/1064259/how-can-i-compile-and-deploy-a-java-class-at-runtime|5|https://stackoverflow.com/questions/2858734/compiling-a-class-using-java-code-using-process|6|https://stackoverflow.com/questions/636367/java-executing-a-java-application-in-a-separate-process|7|https://stackoverflow.com/questions/845654/running-a-program-from-within-java-code|8|9|https://stackoverflow.com/questions/64000/draining-standard-error-in-java|10|http://java.sun.com/javase/6/docs/api/javax/tools/package-summary.html#package_description|11|http://www.javabeat.net/articles/73-the-java-60-compiler-api-1.html|12|http://download.oracle.com/docs/cd/E17409_01/javase/6/docs/api/javax/tools/JavaCompiler.html|13|https://stackoverflow.com/questions/2543439/null-pointer-exception-while-using-java-compiler-api^0|1|C|0|L|12|20|7|2L|8|L|12|0|20|7|1|0|H|7|0|0|0|0|1G|2|0|0|19|3|0|0|1H|4|0|0|1B|5|0|0|1K|6|0|0|15|7|0|0|0|4|7|0|8|9|J|7|0|2|7|8|0|0|0|0|0|0|0|0|V|9|0|0|0|0|0|0|2|J|2|J|A|0|0|P|B|0|0|0|M|0|M|C|0|0|0|0|0|0|1G|D|0|0^^$0|@$1|2|3|4|5|6|7|32|8|@$9|33|A|34|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|35|8|@$9|36|A|37|B|C]|$9|38|A|39|B|C]|$9|3A|A|3B|B|C]]|D|@$9|3C|A|3D|1|3E]|$9|3F|A|3G|1|3H]]|E|$]]|$1|H|3|I|5|6|7|3I|8|@$9|3J|A|3K|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|3L|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|3M|8|@]|D|@]|E|$]]|$1|M|3|N|5|O|7|3N|8|@]|D|@$9|3O|A|3P|1|3Q]]|E|$]]|$1|P|3|Q|5|O|7|3R|8|@]|D|@$9|3S|A|3T|1|3U]]|E|$]]|$1|R|3|S|5|O|7|3V|8|@]|D|@$9|3W|A|3X|1|3Y]]|E|$]]|$1|T|3|U|5|O|7|3Z|8|@]|D|@$9|40|A|41|1|42]]|E|$]]|$1|V|3|W|5|O|7|43|8|@]|D|@$9|44|A|45|1|46]]|E|$]]|$1|X|3|Y|5|O|7|47|8|@]|D|@$9|48|A|49|1|4A]]|E|$]]|$1|Z|3|-4|5|6|7|4B|8|@]|D|@]|E|$]]|$1|10|3|-4|5|6|7|4C|8|@]|D|@]|E|$]]|$1|11|3|12|5|6|7|4D|8|@$9|4E|A|4F|B|C]]|D|@]|E|$]]|$1|13|3|14|5|6|7|4G|8|@$9|4H|A|4I|B|C]|$9|4J|A|4K|B|C]]|D|@]|E|$]]|$1|15|3|16|5|6|7|4L|8|@]|D|@$9|4M|A|4N|1|4O]]|E|$]]|$1|17|3|-4|5|6|7|4P|8|@]|D|@]|E|$]]|$1|18|3|19|5|1A|7|4Q|8|@]|D|@]|E|$]]|$1|1B|3|-4|5|6|7|4R|8|@]|D|@]|E|$]]|$1|1C|3|-4|5|6|7|4S|8|@]|D|@]|E|$]]|$1|1D|3|K|5|6|7|4T|8|@]|D|@]|E|$]]|$1|1E|3|-4|5|6|7|4U|8|@]|D|@]|E|$]]|$1|1F|3|1G|5|O|7|4V|8|@]|D|@$9|4W|A|4X|1|4Y]]|E|$]]|$1|1H|3|-4|5|6|7|4Z|8|@]|D|@]|E|$]]|$1|1I|3|-4|5|6|7|50|8|@]|D|@]|E|$]]|$1|1J|3|1K|5|6|7|51|8|@]|D|@]|E|$]]|$1|1L|3|1M|5|6|7|52|8|@]|D|@]|E|$]]|$1|1N|3|1O|5|6|7|53|8|@]|D|@]|E|$]]|$1|1P|3|1Q|5|6|7|54|8|@$9|55|A|56|B|C]]|D|@$9|57|A|58|1|59]]|E|$]]|$1|1R|3|1S|5|O|7|5A|8|@]|D|@$9|5B|A|5C|1|5D]]|E|$]]|$1|1T|3|1U|5|6|7|5E|8|@]|D|@]|E|$]]|$1|1V|3|1W|5|O|7|5F|8|@$9|5G|A|5H|B|C]]|D|@$9|5I|A|5J|1|5K]]|E|$]]|$1|1X|3|-4|5|6|7|5L|8|@]|D|@]|E|$]]|$1|1Y|3|1Z|5|6|7|5M|8|@]|D|@]|E|$]]|$1|20|3|K|5|6|7|5N|8|@]|D|@]|E|$]]|$1|21|3|-4|5|6|7|5O|8|@]|D|@]|E|$]]|$1|22|3|23|5|O|7|5P|8|@]|D|@$9|5Q|A|5R|1|5S]]|E|$]]|$1|24|3|-4|5|6|7|5T|8|@]|D|@]|E|$]]|$1|25|3|-4|5|6|7|5U|8|@]|D|@]|E|$]]]|26|$27|$5|28|29|2A|E|$2B|2C]]|2D|$5|28|29|2A|E|$2B|2E]]|2F|$5|28|29|2A|E|$2B|2G]]|2H|$5|28|29|2A|E|$2B|2I]]|2J|$5|28|29|2A|E|$2B|2K]]|2L|$5|28|29|2A|E|$2B|2M]]|2N|$5|28|29|2A|E|$2B|2O]]|2P|$5|28|29|2A|E|$2B|2Q]]|2R|$5|28|29|2A|E|$2B|2E]]|2S|$5|28|29|2A|E|$2B|2T]]|2U|$5|28|29|2A|E|$2B|2V]]|2W|$5|28|29|2A|E|$2B|2X]]|2Y|$5|28|29|2A|E|$2B|2Z]]|30|$5|28|29|2A|E|$2B|31]]]]

<h3>On <code>Runtime.exec</code></h3>

<p>Though perhaps not the most ideal solution, you an execute a shell command as a separate <a href="http://java.sun.com/javase/6/docs/api/java/lang/Process.html" rel="nofollow noreferrer"><code>Process</code></a> using <a href="http://java.sun.com/javase/6/docs/api/java/lang/Runtime.html#exec%28java.lang.String%29" rel="nofollow noreferrer"><code>Runtime.getRuntime().exec(someCommand)</code></a>. There are also overloads that takes parameters as a <code>String[]</code>.</p>

<p>This is not an easy solution. Managing a concurrent <code>Process</code> and preventing a deadlock etc is not trivial.</p>

<h3>Related questions</h3>

<ul>
<li><a href="https://stackoverflow.com/questions/1081084/is-java-runtime-execstring-platform-independent">Is java Runtime.exec(String[]) platform independent?</a></li>
<li><a href="https://stackoverflow.com/questions/2798425/what-is-the-purpose-of-process-class-in-java">What is the purpose of Process class in Java?</a></li>
<li><a href="https://stackoverflow.com/questions/1064259/how-can-i-compile-and-deploy-a-java-class-at-runtime">How can I compile and deploy a java class at runtime?</a></li>
<li><a href="https://stackoverflow.com/questions/2858734/compiling-a-class-using-java-code-using-process">Compiling a class using Java code using process</a></li>
<li><a href="https://stackoverflow.com/questions/636367/java-executing-a-java-application-in-a-separate-process">Java: Executing a Java application in a separate process</a></li>
<li><a href="https://stackoverflow.com/questions/845654/running-a-program-from-within-java-code">Running a program from within Java code..</a></li>
</ul>

<hr>

<h3>On draining <code>Process</code> streams</h3>

<p>Generally you can't just <code>waitFor()</code> a <code>Process</code> to terminate; you must also drain its I/O streams to prevent deadlock.</p>

<p>From <a href="http://java.sun.com/javase/6/docs/api/java/lang/Process.html" rel="nofollow noreferrer">the API</a>:</p>

<blockquote>
  <p>Because some native platforms only provide limited buffer size for standard input and output streams, failure to promptly write the input stream or read the output stream of the subprocess may cause the subprocess to block, and even deadlock. </p>
</blockquote>

<h3>Related questions</h3>

<ul>
<li><a href="https://stackoverflow.com/questions/64000/draining-standard-error-in-java">Draining Standard Error in Java</a></li>
</ul>

<hr>

<h3>On the Java 6 Compiler API</h3>

<p>One option to compiling a Java source code within Java is to use the Java 6 Compiler API. This requires a JDK to be installed (not just a JRE).</p>

<h3>See also</h3>

<ul>
<li><a href="http://download.oracle.com/docs/cd/E17409_01/javase/6/docs/api/javax/tools/JavaCompiler.html" rel="nofollow noreferrer"><code>interface JavaCompiler</code></a> from <a href="http://java.sun.com/javase/6/docs/api/javax/tools/package-summary.html#package_description" rel="nofollow noreferrer"><code>package javax.tools</code></a>

<ul>
<li><a href="http://www.javabeat.net/articles/73-the-java-60-compiler-api-1.html" rel="nofollow noreferrer">external tutorial article</a></li>
</ul></li>
</ul>

<h3>Related questions</h3>

<ul>
<li><a href="https://stackoverflow.com/questions/2543439/null-pointer-exception-while-using-java-compiler-api">Null Pointer Exception while using Java Compiler API</a></li>
</ul>


blocks|key|1532974|text|java.lang.Runtime类有一个允许您执行任意外壳命令的方法。所以它应该看起来像这样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1532975|List<String>+commandsToExecute+=+...

for+(String+cmd+:+commandsToExecute)+{
++Process+p+=+Runtime.getRuntime().exec+(cmd);
++p.waitFor();+//+If+you+need+to+run+them+all+sequentially.
}|code-block|syntax|javascript|1532976|documentation中描述了Runtime.exec()方法的其他几个版本。|offset|length|1532977|entityMap|0|LINK|mutability|MUTABLE|url|http://download.oracle.com/docs/cd/E17476_01/javase/1.5.0/docs/api/java/lang/Runtime.html#exec%2528java.lang.String%2529^0|0|0|0|D|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

<p>The java.lang.Runtime class has a method allowing you to execute arbitrary shell commands. So it should look something like this :</p>

<pre><code>List&lt;String&gt; commandsToExecute = ...

for (String cmd : commandsToExecute) {
  Process p = Runtime.getRuntime().exec (cmd);
  p.waitFor(); // If you need to run them all sequentially.
}
</code></pre>

<p>There are several other versions of the Runtime.exec() method which are all described in the <a href="http://download.oracle.com/docs/cd/E17476_01/javase/1.5.0/docs/api/java/lang/Runtime.html#exec%28java.lang.String%29" rel="nofollow noreferrer">documentation</a>.</p>


blocks|key|3951556|text|使用Runtime.getRuntime().exec(someCommand)的另一个问题是，您需要从衍生进程读取输出流和错误流，否则您的进程将挂起。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3951557|这两个流都有有限的可用缓冲区，一旦它们填满，程序将等待你从它们中读取，并且无法继续。这两个缓冲区必须在各自独立的线程中读取，以便其中一个不会死锁另一个。|3951558|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

<p>Another issue with using Runtime.getRuntime().exec(someCommand) is that you need to read both the Output stream and Error streams from the spawn process otherwise your process will hang.</p>

<p>There is a limited amount of buffer available for both streams and once they fill the program  will wait for you to read from them and be unable to continue.  These two buffers must be read in their own separate threads so that one will not deadlock the other.</p>


blocks|key|1533011|text|您可以使用ANT。您也可以从命令运行ANT，而不是从Eclipse或其他什么地方运行ANT。这意味着您可以创建一个java程序来执行命令->+ergo，并使用参数执行ant。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1533012|这些参数可以从要构建的应用程序列表中的变量派生而来。|1533013|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

<p>You can use ANT. instead of running the ANT from Eclipse or whatever, you can also run it from command. This means you can create a java program that executes commands -> ergo that executes ant with parameters.</p>

<p>These parameters can be derived from variables from the list of applications you want to build.</p>


blocks|key|1533034|text|它没有直接回答这个问题，但一些库可以帮助使用"Runtime.exec()“方法(消耗I/O流等)来调用"javac”。例如this+one，名为"Shell“(法语文章，可在末尾下载该库)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1533035|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.developpez.com/adiguba/p3035/java/5-0-tiger/runtime-exec-n-est-pas-des-plus-simple/^0|1Q|8|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<p>It doesn't directly answer the question, but some librairies can help to use the "Runtime.exec()" method (consuming I/O streams, etc.), to invoke "javac". For example <a href="http://blog.developpez.com/adiguba/p3035/java/5-0-tiger/runtime-exec-n-est-pas-des-plus-simple/" rel="nofollow noreferrer">this one</a>, named "Shell" (french article where the library can be downloaded at the end).</p>


<p>Instead of using a .bat file, how the code can be built for java program for compiling and executing a list of java programs.</p>


How to create a java progam to compile and run a list of java programs

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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不是使用.bat文件，而是如何为java程序编译和执行java程序列表构建代码。

问如何创建一个java程序来编译和运行一系列java程序
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问如何创建一个java程序来编译和运行一系列java程序EN