question: public LogFormat ( double base , String baseLabel , String powerLabel , boolean showBase ) { ParamChecks . nullNotPermitted ( baseLabel , "baseLabel" ) ; ParamChecks . nullNotPermitted ( powerLabel , "powerLabel" ) ; this . base = base ; this . baseLog = Math . log ( this . base ) ; this . baseLabel = baseLabel ; this . showBase = showBase ; this . powerLabel = powerLabel ; }
target:  Creates a new instance.