Groups > comp.lang.java.programmer > #29975

Re: How does it know?

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From	Mike Amling <mamling@chaff.us>
Newsgroups	comp.lang.java.programmer
Subject	Re: How does it know?
Date	Sun, 14 Sep 2014 08:52:55 -0500
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On 9/12/14 6:18 PM, Knute Johnson wrote:
>   I'd like to figure out a way to store some sort of a reference to
> Main.main() so that I could execute it.

Any reason you don't want to use plain old reflection?

import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
...

Method callme;
try {
     callme=test1.class.getDeclaredMethod("main",
      new Class[]{new String[0].getClass()});
} catch (final NoSuchMethodException n) {
     return;
}
HashMap<String, Method> store=new HashMap<String, Method>();
store.put("main", callme);


try {
     store.get("main").invoke(null, new Object[]{new String[0]});
} catch (final IllegalAccessException a) {
} catch (final InvocationTargetException t) {
}

--Mike Amling
Tm8gbmVlZCBmb3IgMS44LCBqdXN0IDEuMg==

Thread

How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-12 08:11 -0700
  Re: How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-12 08:36 -0700
    Re: How does it know? Steven Simpson <ss@domain.invalid> - 2014-09-12 17:36 +0100
      Re: How does it know? Donkey Hottie <donkey@fredriksson.dy.fi> - 2014-09-12 21:40 +0300
        Re: How does it know? Joerg Meier <joergmmeier@arcor.de> - 2014-09-13 11:57 +0200
  Re: How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-12 16:18 -0700
    Re: How does it know? Mike Amling <mamling@chaff.us> - 2014-09-14 08:52 -0500
      Re: How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-14 07:48 -0700
  Re: How does it know? Roedy Green <see_website@mindprod.com.invalid> - 2014-09-12 18:11 -0700
    Re: How does it know? Joerg Meier <joergmmeier@arcor.de> - 2014-09-13 11:59 +0200
      Re: How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-14 07:51 -0700
        Re: How does it know? Arne Vajhøj <arne@vajhoej.dk> - 2014-09-14 22:24 -0400
    Re: How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-14 07:50 -0700
      Re: How does it know? Arne Vajhøj <arne@vajhoej.dk> - 2014-09-14 22:26 -0400
        Re: How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-17 14:52 -0700
  Re: How does it know? Roedy Green <see_website@mindprod.com.invalid> - 2014-09-12 18:13 -0700
  Re: How does it know? Mike Amling <mamling@chaff.us> - 2014-09-14 08:29 -0500
    Re: How does it know? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-09-14 07:53 -0700
      Re: How does it know? Roedy Green <see_website@mindprod.com.invalid> - 2014-09-17 00:40 -0700
        Re: How does it know? Joerg Meier <joergmmeier@arcor.de> - 2014-09-18 00:10 +0200

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