spring - Loading Java Properties Files by Profile -

i want load properties files in java code. use profile config -dspring.profiles.active=local or dev... how load properties files profile this:

classpath:${spring.profiles.active}/test.properties 

how in java code ? did below, null.

properties prop = new properties(); inputstream istream = helper.class.getclassloader().getresourceasstream("test.properties");     try {         prop.load(istream);     } catch (ioexception e) {         log.error(e.getmessage(), e);     } {         try {             istream.close();         } catch (ioexception e) {             log.error(e.getmessage(), e);         }     }