JNI를 사용하지 않고 Java에서 운영 체제 정보를 효율적으로 검색하려면 어떻게 해야 합니까?

public class Main {
    public static void main(String[] args) {
        // Print memory-related details
        System.out.println("Available processors: " + Runtime.getRuntime().availableProcessors());
        System.out.println("Free memory (bytes): " + Runtime.getRuntime().freeMemory());
        System.out.println("Maximum memory (bytes): " + Runtime.getRuntime().maxMemory());
        System.out.println("Total memory (bytes): " + Runtime.getRuntime().totalMemory());
    }
}

import java.io.File;

public class Main {
    public static void main(String[] args) {
        // Print disk space usage information for all file system roots
        for (File root : File.listRoots()) {
            System.out.println("File system root: " + root.getAbsolutePath());
            System.out.println("Total space (bytes): " + root.getTotalSpace());
            System.out.println("Free space (bytes): " + root.getFreeSpace());
            System.out.println("Usable space (bytes): " + root.getUsableSpace());
        }
    }
}