set the system identifier for this source . if an input source has already been set , it will set the system id or that input source , otherwise it will create a new input source . the system identifier is optional if there is a byte stream or a character stream , but it is still useful to provide one , since the application can use it to resolve relative uris and can include it in error messages and warnings the parser will attempt to open a connection to the uri only if no byte stream or character stream is specified . concode_field_sep String FEATURE concode_elem_sep XMLReader reader concode_elem_sep InputSource inputSource concode_field_sep String getSystemId concode_elem_sep InputSource sourceToInputSource concode_elem_sep void setInputSource concode_elem_sep void setXMLReader concode_elem_sep XMLReader getXMLReader concode_elem_sep InputSource getInputSource
void function ( String arg0 ) { if ( null == inputSource ) { inputSource = new InputSource ( arg0 ) ; } else { inputSource . setSystemId ( arg0 ) ; } }