update vignettes with cleanup and interlink them

Author: e-kotov

README.qmd

@@ -108,6 +108,21 @@ This acts exactly like `java_quick_install()`, but only sets the environment var
 
 More details are in the vignette [Multiple `Java` environments in one project with `targets` and `callr`](https://www.ekotov.pro/rJavaEnv/articles/multiple-java-with-targets-callr.qmd).
 
+## Cleanup
+
+If you do not want to use `rJavaEnv` anymore, please clear the cache folders before removing the package:
+
+```{r}
+java_clear("project", delete_all = TRUE)
+java_clear("installed", delete_all = TRUE)
+java_clear("distrib", delete_all = TRUE)
+```
+
+Also, clear the `.Rprofile` file in the projects there you used the package:
+
+```{r}
+java_env_unset()
+```
 
 ## Functions Overview
 

vignettes/rJavaEnv-step-by-step.qmd

@@ -305,3 +305,19 @@ Using current session's JAVA_HOME: C:/Users/user_name/AppData/Local/Temp/75/Rtmp
 With the user-specified JAVA_HOME rJava and other rJava/Java-based packages will use Java version: "17.0.12"
 [1] TRUE
 ```
+
+### 6. Cleanup
+
+If you do not want to use `rJavaEnv` anymore, please clear the cache folders before removing the package:
+
+```{r}
+java_clear("project", delete_all = TRUE)
+java_clear("installed", delete_all = TRUE)
+java_clear("distrib", delete_all = TRUE)
+```
+
+Also, clear the `.Rprofile` file in the projects there you used the package:
+
+```{r}
+java_env_unset()
+```

vignettes/rJavaEnv.qmd

@@ -14,8 +14,8 @@ pkgdown:
   as_is: true
 ---
 
-This guide will walk you through downloading, installing, and managing `Java` environments for your R projects using the `rJavaEnv` package. We'll cover setting up the environment, un-setting it, managing distributions, installing `Java`, and checking `Java` versions.
 
+This guide will walk you through downloading, installing, and managing `Java` environments for your R projects using the `rJavaEnv` package. We'll cover setting up the environment, un-setting it, managing distributions, installing `Java`, and checking `Java` versions. For more advanced use refer to the vignettes on [step-by-step fine-grained procedure to download, unpack, install and linke `Java`](rJavaEnv-step-by-step.qmd) and [vignette on using `rJavaEnv` with the `targets` and `callr` packages to manage multiple `Java` environments](multiple-java-with-targets-callr.qmd)
 
 ### 1. Quickly Download and Install Java
 
@@ -142,7 +142,7 @@ Example expected output (on a Windows machine):
 Removed JAVA_HOME settings from .Rprofile in 'C:/Users/user_name/AppData/Local/Temp/75/RtmpuoG3xJ/.Rprofile'
 ```
 
-Now restart the current `R` session so that `R` picks up the system `Java` (or no `Java`, if it is not installed in the system).
+
 
 #### Delete `Java` from the project directory
 
@@ -158,3 +158,24 @@ Example expected output:
 ```
 All Java symlinks in the project have been cleared.
 ```
+
+Now restart the current `R` session so that `R` picks up the system `Java` (or no `Java`, if it is not installed in the system).
+
+### 4. Complete Cleanup
+
+If you do not want to use `rJavaEnv` anymore, please clear the cache folders before removing the package:
+
+```{r}
+java_clear("project", delete_all = TRUE)
+java_clear("installed", delete_all = TRUE)
+java_clear("distrib", delete_all = TRUE)
+```
+
+Also, clear the `.Rprofile` file in the projects there you used the package:
+
+```{r}
+java_env_unset()
+```
+
+
+Now you can remove the package and restart the current `R` session so that `R` picks up the system `Java` (or no `Java`, if it is not installed in the system).