如何用Java代码GZip解压压缩后的字符串数据

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

public static String decompress(String compressedData) throws IOException {
    byte[] compressedBytes = compressedData.getBytes("ISO-8859-1");
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ByteArrayInputStream in = new ByteArrayInputStream(compressedBytes);
    GZIPInputStream gzipIn = new GZIPInputStream(in);
    byte[] buffer = new byte[4096];
    int n;
    while ((n = gzipIn.read(buffer)) >= 0) {
        out.write(buffer, 0, n);
    }
    return out.toString("UTF-8");
}

String compressedData = "压缩后的字符串数据";
String uncompressedData = decompress(compressedData);
System.out.println(uncompressedData);