getting the url of a class

[Aryeh M. Friedman]

If I have a class that is already loaded how do I figure out from what
URL it was loaded from (actually local filename is all I care about)?

 

[Arne Vajhøj]

If I have a class that is already loaded how do I figure out from what
URL it was loaded from (actually local filename is all I care about)?

private String getPath(Class cls) {
String cn = cls.getName();
String rn = cn.replace('.', '/') + ".class";
String path =
getClass().getClassLoader().getResource(rn).getPath();
int ix = path.indexOf("!");
if(ix >= 0) {
return path.substring(0, ix);
} else {
return path;
}
}

Arne

 

[Owen Jacobson]

If I have a class that is already loaded how do I figure out from what
URL it was loaded from (actually local filename is all I care about)?

Assuming that the class was loaded from a file at all, you can get that
information from the class's ProtectionDomain. Have a look at
<http://java.sun.com/javase/6/docs/api/java/security/ProtectionDomain.html>
particularly the getCodeSource() method.

-O

 

[Roedy Green]

If I have a class that is already loaded how do I figure out from what
URL it was loaded from (actually local filename is all I care about)?

see http://mindprod.com/jgloss/protectiondomain.html