public void generate( String... args ) {
        Format format = ConfigOptionParser.getFormat( args );
        switch( format ) {
            case ASCIIDOC:
                new AsciiDocReportGenerator().generateFromCommandLine( args );
                break;
            case TEXT:
                new PlainTextReportGenerator().generateFromCommandLine( args );
                break;
            case HTML:
            case HTML5:
            default:
                ReportGenerator.generateHtml5Report().generateFromCommandLine( args );
                break;
        }
    }
Starts the respective report (default is HTML5)
jgiven-core/src/main/java/com/tngtech/jgiven/report/ReportGenerator.java