is this a valid xlsx file R code example

Example 1: how to read excel file in r

library("readxl")
# xls files
my_data <- read_excel("my_file.xls")
# xlsx files
my_data <- read_excel("my_file.xlsx")

Example 2: read xlsx in r

require(xlsx)
read.xlsx("myfile.xlsx", sheetName = "Sheet1")
read.xlsx2("myfile.xlsx", sheetName = "Sheet1")