请用 java 写几种压缩文件夹的代码. 并告诉我他们的时间耗费分别是多少

以下给出两种压缩文件夹的 Java 代码，分别使用了 ZipOutputStream 和 GZIPOutputStream 进行压缩：

1. 使用 ZipOutputStream 进行压缩：

import java.io.*;
import java.util.zip.*;

public class ZipFolder {
    public static void main(String[] args) throws IOException {
        long start = System.currentTimeMillis();
        String sourceFolder = "path/to/source/folder";
        String zipFile = "path/to/output/file.zip";
        FileOutputStream fos = new FileOutputStream(zipFile);
        ZipOutputStream zos = new ZipOutputStream(fos);

        addFolderToZip(sourceFolder, sourceFolder, zos);

        zos.close();
        fos.close();
        long end = System.currentTimeMillis();
        System.out.println("压缩完成，耗时：" + (end - start) + "ms");
    }

    private static void addFolderToZip(String folderPath, String sourceFolder, ZipOutputStream zos) throws IOException {
        File folder = new File(folderPath);
        File[] files = folder.listFiles();
        for (File file : files) {
            if (file.isDirectory()) {
                addFolderToZip(file.getAbsolutePath(), sourceFolder, zos);
            } else {
                String filePath = file.getAbsolutePath().substring(sourceFolder.length() + 1);
                ZipEntry zipEntry = new ZipEntry(filePath);
                zos.putNextEntry(zipEntry);
                FileInputStream fis = new FileInputStream(file);
                byte[] buffer = new byte[1024];
                int length;
                while ((length = fis.read(buffer)) > 0) {
                    zos.write(buffer, 0, length);
                }
                fis.close();
            }
        }
    }
}

2. 使用 GZIPOutputStream 进行压缩：

import java.io.*;
import java.util.zip.*;

public class GzipFolder {
    public static void main(String[] args) throws IOException {
        long start = System.currentTimeMillis();
        String sourceFolder = "path/to/source/folder";
        String gzipFile = "path/to/output/file.gz";
        FileOutputStream fos = new FileOutputStream(gzipFile);
        GZIPOutputStream gzos = new GZIPOutputStream(fos);

        addFolderToGzip(sourceFolder, sourceFolder, gzos);

        gzos.finish();
        gzos.close();
        fos.close();
        long end = System.currentTimeMillis();
        System.out.println("压缩完成，耗时：" + (end - start) + "ms");
    }

    private static void addFolderToGzip(String folderPath, String sourceFolder, GZIPOutputStream gzos) throws IOException {
        File folder = new File(folderPath);
        File[] files = folder.listFiles();
        for (File file : files) {
            if (file.isDirectory()) {
                addFolderToGzip(file.getAbsolutePath(), sourceFolder, gzos);
            } else {
                String filePath = file.getAbsolutePath().substring(sourceFolder.length() + 1);
                FileInputStream fis = new FileInputStream(file);
                byte[] buffer = new byte[1024];
                int length;
                while ((length = fis.read(buffer)) > 0) {
                    gzos.write(buffer, 0, length);
                }
                fis.close();
            }
        }
    }
}

注意：以上代码只是示例，实际使用时需要根据具体情况进行修改。

由于压缩的文件夹大小和计算机配置等因素不同，实际的时间耗费也会有所不同，无法给出准确的时间。