R语言关于XLSX问题

[yolo_krystal]

输入cars32 <- read.xlsx("mtcars.xlsx",sheetIndex = 1,header = T)后提示：
Error in loadWorkbook(file, password = password) :
Cannot find mtcars.xlsx
请问是为什么啊？我JAVA环境下好了呀？

[yolo_krystal]

我查找了data(package="xlsx")显示： no data sets found Warning messages: 1: In read.table(path, encoding = encoding, header = header, sep = sep, : line 2 appears to contain embedded nulls 2: In read.table(path, encoding = encoding, header = header, sep = sep, : line 3 appears to contain embedded nulls 3: In read.table(path, encoding = encoding, header = header, sep = sep, : line 4 appears to contain embedded nulls 4: In read.table(path, encoding = encoding, header = header, sep = sep, : line 5 appears to contain embedded nulls 5: In read.table(path, encoding = encoding, header = header, sep = sep, : incomplete final line found by readTableHeader on '~/R/win-library/4.0/xlsx/Meta/vignette.rds'