question: public static boolean isOn ( String option ) { if ( args == null ) { return false ; } else { int n = 0 ; option = option . toLowerCase ( Locale . ENGLISH ) ; if ( args . indexOf ( "all" ) != - 1 ) { return true ; } else if ( ( n = args . indexOf ( "ssl" ) ) != - 1 ) { if ( args . indexOf ( "sslctx" , n ) == - 1 ) { if ( ! ( option . equals ( "data" ) || option . equals ( "packet" ) || option . equals ( "plaintext" ) ) ) { return true ; } } } return ( args . indexOf ( option ) != - 1 ) ; } }
target:  True if the property "javax.net.debug" contains the string "option".