In Java, renaming a ZIP file is no different from renaming any regular file on the filesystem. The operation does not require interacting with the contents of the archive—it only involves changing the file's name in the directory structure.

Approach Using java.io.File

The standard way to rename a file in Java (including ZIP archives) is by using the renameTo() method of the File class. Below is a practical example that renames example.zip to renamed_archive.zip:

import java.io.File;

public class ZipFileRenamer {
    public static void main(String[] args) {
        File source = new File("example.zip");
        File target = new File("renamed_archive.zip");

        if (!source.exists()) {
            System.err.println("Source file not found.");
            return;
        }

        boolean success = source.renameTo(target);
        if (success) {
            System.out.println("ZIP file renamed successfully.");
        } else {
            System.err.println("Failed to rename the file.");
        }
    }
}

This code checks whether the original ZIP file exists and attempts to rename it. Note that renameTo() may fail if the target file already exists or if the operatino is not supported by the underlying filesystem.

Modern Alternative with java.nio.file

For better reliability and cross-platform compatibility, especially in newer Java versions, it's recommended to use the Files.move() method:

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;

public class ModernZipRenamer {
    public static void main(String[] args) {
        Path source = Paths.get("example.zip");
        Path target = Paths.get("renamed_archive.zip");

        try {
            Files.move(source, target, StandardCopyOption.REPLACE_EXISTING);
            System.out.println("ZIP file renamed using NIO.");
        } catch (IOException e) {
            System.err.println("Error renaming file: " + e.getMessage());
        }
    }
}

This approach supports options like replacing a existing target file and provides clearer error hnadling through exceptions.