Re: get a list of classes at runtime

Posted by =?UTF... on 13. May 2015

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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