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Groups > comp.lang.java.programmer > #31711

Re: get a list of classes at runtime

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On 5/13/2015 9:14 AM, Philipp Kraus wrote:
> I think so, but how do IDEs like IntelliJ or Eclipse this call? If I
> write into the code editor
> something a dialog is show, which lists all possibility classes.
> So imho I need to run over the Jar, create an index of all class files
> and use a pattern structure to
> match the names.

For Eclipse at least, the location of used jar files (including the main 
rt.jar) is configured in the project settings. I recall Eclipse having 
settings to let you choose which of the available JDK/JREs to use. I 
imagine this is found in part by searching for well-known install 
locations, and letting a developer switch between multiple installed 
JDKs is useful for a Java IDE.

It is possible in a running Java program to find the directory of the 
current JRE (System.getProperty("java.home")), as well as the class path 
in use (System.getProperty("java.class.path")).


-- 
Beware of bugs in the above code; I have only proved it correct, not 
tried it. -- Donald E. Knuth

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get a list of classes at runtime Philipp Kraus <philipp.kraus@flashpixx.de> - 2015-05-13 14:47 +0200
  Re: get a list of classes at runtime Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-05-13 10:06 -0400
    Re: get a list of classes at runtime Philipp Kraus <philipp.kraus@flashpixx.de> - 2015-05-13 16:14 +0200
      Re: get a list of classes at runtime Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-05-13 11:23 -0400
        Re: get a list of classes at runtime Arne Vajhøj <arne@vajhoej.dk> - 2015-05-17 19:29 -0400
      Re: get a list of classes at runtime Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2015-05-13 22:15 -0500
    Re: get a list of classes at runtime e.d.programmer@gmail.com - 2015-05-13 08:59 -0700
      Re: get a list of classes at runtime Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-05-13 16:05 -0400
        Re: get a list of classes at runtime Martin Gregorie <martin@address-in-sig.invalid> - 2015-05-13 22:43 +0000
  Re: get a list of classes at runtime Joerg Meier <joergmmeier@arcor.de> - 2015-05-13 16:20 +0200
  Re: get a list of classes at runtime j4n bur53 <janburse@fastmail.fm> - 2015-05-13 17:47 +0200
  Re: get a list of classes at runtime Arne Vajhøj <arne@vajhoej.dk> - 2015-05-17 19:09 -0400

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