String to Absolute File Path

ToAbsoluteFilePath.java

import java.nio.file.FileSystems;

class ToAbsoluteFilePath {

    public static void main(String args[]) {
        System.out.println(toAbsolutePath("C:\\"));
    }
    
    public static String toAbsolutePath(String path) {
        return FileSystems.getDefault().getPath(path).normalize().toAbsolutePath().toString();
    }
}