src/sap.ui.core/src/sap/ui/core/date/Japanese.js
function toGregorian(oJapanese) {
		var iEraStartYear = UniversalDate.getEraStartDate(CalendarType.Japanese, oJapanese.era).year;
		return {
			year: iEraStartYear + oJapanese.year - 1,
			month: oJapanese.month,
			day: oJapanese.day
		};
	}
function toGregorian(oJapanese) {
		var iEraStartYear = UniversalDate.getEraStartDate(CalendarType.Japanese, oJapanese.era).year;
		return {
			year: iEraStartYear + oJapanese.year - 1,
			month: oJapanese.month,
			day: oJapanese.day
		};
	}
function toGregorian ( oJapanese ) { var iEraStartYear = UniversalDate . getEraStartDate ( CalendarType . Japanese , oJapanese . era ) . year ; return { year : iEraStartYear + oJapanese . year - 1 , month : oJapanese . month , day : oJapanese . day } ; }
Calculate gregorian year from japanes era and year

@param {object} oJapanese
@return {int}
Calculate gregorian year from japanes era and year