Function java_home 

pub fn java_home() -> Option<JavaInfo>

Returns a JavaInfo for the Java installation pointed to by the JAVA_HOME environment variable, if set and valid.

This function reads the JAVA_HOME variable, treats it as a path, and attempts to create a JavaInfo from it. If the variable is not set or if the resulting JavaInfo cannot be created (e.g., the path does not contain a valid Java), None is returned.

Examples

use java_manager::java_home;

if let Some(java) = java_home() {
    println!("JAVA_HOME points to Java version {}", java.version);
} else {
    println!("JAVA_HOME is not set or invalid");
}