java 如何为 jar 文件设置最大 jvm 内存（XMX）
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How do I set maximal jvm-memory (XMX) for a jar-file
提问by Fabian Zeindl
How do I set the maximal jvm-memory without adding an extra batch-script to my Programm. Answer is provided below.
如何设置最大 jvm 内存而不向我的程序添加额外的批处理脚本。答案如下。
采纳答案by mdma
It's a good question, but your implmenetation assumes a lot. I presume you have to document the name of your jar for your users to invoke "java -jar xyz.jar" on so can you also include in the documentation that "-Xmx256M" is required?
这是一个很好的问题，但您的实现假设了很多。我认为您必须记录您的 jar 的名称，以便您的用户调用“java -jar xyz.jar”，那么您是否还可以在需要“-Xmx256M”的文档中包含？
You may have more luck using a java launcher, such as this onefor Windows, where you put the launcher config (path, max memory etc.) in a separate file. For cross platform, there's LaunchAnywhere, and others, which function similarly. See How can I convert my Java program to an .exe file?
您可能需要使用Java启动，更多的运气如这一个针对Windows，你把发射器配置（路径，最大内存等），在一个单独的文件。对于跨平台，有 LaunchAnywhere 和其他类似的功能。请参阅如何将我的 Java 程序转换为 .exe 文件？
To improve upon your existing scheme:
改进您现有的方案：
- use the
java.homesystem property to resolve the location of the JDK/JRE - use the
java.class.pathto set up the class path, and similarly forjava.library.pathif your application requires native code. - pass command arguments passed to your main method to the spanwed process
- 使用
java.home系统属性来解析 JDK/JRE 的位置 - 使用
java.class.path来设置类路径，java.library.path如果您的应用程序需要本机代码，则类似。 - 将传递给 main 方法的命令参数传递给 spanwed 进程
But still, this seems to be a lot of effort that at best represents a leaky abstraction, when instead simple and clear documentation would suffice.
但是，这似乎是很多努力，充其量只能代表一个有漏洞的抽象，而简单而清晰的文档就足够了。
