从另一个调用java程序 [英] Calling a java program from another

问题描述

如何从独立的java程序中调用Java命令。

How do i call a Java command from a stand alone java program.

我理解Runtime.getRuntime（）。exec（cmd c / javac< >的.java）;会工作。但是，这将是特定于平台的。

I understand that Runtime.getRuntime().exec("cmd c/ javac <>.java"); would work. However, this would be platform specific.

任何其他可用的API可以使它在j2sdk1.4中运行？

Any other APIs available that could make it work in j2sdk1.4 ?

推荐答案

如果你可以在同一个JVM中运行所有东西，你可以这样做：

If you can run everything in the same JVM, you could do something like this:

public class Launcher {
    ...
    public static void main(String[] args) throws Exception {
        launch(Class.forName(args[0]), programArgs(args, 1));
    }

    protected static void launch(Class program, String[] args) throws Exception {
        Method main = program.getMethod("main", new Class[]{String[].class});
        main.invoke(null, new Object[]{args});
    }

    protected static String[] programArgs(String[] sourceArgs, int n) {
        String[] destArgs = new String[sourceArgs.length - n];
        System.arraycopy(sourceArgs, n, destArgs, 0, destArgs.length);
        return destArgs;
    }

并使用如下命令行运行它：

And run it with a command line like this:

java Launcher OtherClassWithMainMethod %CMD_LINE_ARGS%

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