import java.io.FileInputStream;
import java.io.IOException;
import java.util.zip.ZipInputStream;

public class ZipFileTypeChecker {
    public static String getZipFileType(String filePath) {
        try (ZipInputStream zis = new ZipInputStream(new FileInputStream(filePath))) {
            if (zis.getNextEntry() != null) {
                return "ZIP";
            }
            return "Not a valid ZIP file";
        } catch (IOException e) {
            return "Not a ZIP file or file does not exist";
        }
    }

    public static void main(String[] args) {
        String filePath = "path_to_your_zip_file.zip";
        String fileType = getZipFileType(filePath);
        System.out.println("File type: " + fileType);
    }
}