Runs a diagnostic check for the r5r dependency chain: whether the r5r
package is installed and whether a suitable Java/JDK (version 21) is
available on the system.
Value
Invisibly, a list with components:
- r5r_installed
Logical.
- java_found
Logical.
- java_version
Integer major version, or
NA.- java_sufficient
Logical. TRUE if version is exactly 21.
- java_memory
Character or NULL. Configured JVM max heap (e.g.
"4g").- system_ram
Character or NULL. Total system RAM (e.g.
"16 GB").- ready
Logical. TRUE if all checks pass.
See also
setup_java() to install Java 21, set_java_memory() to
configure JVM heap size.