Net.lingala.zip4j.exception.zipexception Zip | Headers Not Found. Probably Not A Zip File

If a download was interrupted or a transfer failed, the "End of Central Directory Record" (the signature Zip4j looks for first) might be missing.

// Using java.util.zip try (ZipInputStream zis = new ZipInputStream(new FileInputStream("file.zip"))) ZipEntry entry = zis.getNextEntry(); if (entry == null) System.out.println("java.util.zip also fails"); If a download was interrupted or a transfer