question: public DelphiWorkgroup ( File xmlFile ) throws IOException { if ( xmlFile == null ) { throw new IllegalArgumentException ( "No .groupproje file provided." ) ; } else if ( ! xmlFile . exists ( ) ) { throw new IOException ( ".grupproj XML not found:" + xmlFile . getAbsolutePath ( ) ) ; } parseFile ( xmlFile ) ; }
target:  C-tor, gets project list from xml file