[問題] xlsx packages
不好意思，我又來了，這次的問題是coursera要我讀一個xlsx的檔案
所以我要裝xlsx的包，前幾天我在筆電上面用沒問題，但是換到桌機
他跟我說 Loading required package: rJava
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: fun(libname, pkgname)
error: JAVA_HOME cannot be determined from the Registry
Error: package ‘rJava’ could not be loaded
我google了一下發現也有人有相同問題，他說是沒灌java，所以我又跑去灌java
可是灌了以後也是顯示相同的字句，不知道有沒有人有相同問題或有解法
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