Question

It is possible to know the metadata of a file in java? and if it is, How to get the metadata of a file in java?

Answer 1

There is a basic set of metadata that you can get from a file.

Path file = ...;
BasicFileAttributes attr = Files.readAttributes(file, BasicFileAttributes.class);

System.out.println("creationTime: " + attr.creationTime());
System.out.println("lastAccessTime: " + attr.lastAccessTime());
System.out.println("lastModifiedTime: " + attr.lastModifiedTime());

System.out.println("isDirectory: " + attr.isDirectory());
System.out.println("isOther: " + attr.isOther());
System.out.println("isRegularFile: " + attr.isRegularFile());
System.out.println("isSymbolicLink: " + attr.isSymbolicLink());
System.out.println("size: " + attr.size());

Some things are platform dependent and may throw exceptions or return unexpected results.

You can read more at Managing Metadata (File and File Store Attributes).