Java Utililty Methods Decompress Byte Array

GZIPInputStream gis = new GZIPInputStream(new ByteArrayInputStream(compressed));
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int n;
while ((n = gis.read(buffer)) != -1)
    baos.write(buffer, 0, n);
return baos.toByteArray();

return decompress(compressed, 0, compressed.length);

if (compressed == null || compressed.length == 0) {
    return compressed;
ByteArrayInputStream sourceStream = new ByteArrayInputStream(compressed);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream(compressed.length * 2);
try (GZIPInputStream compressor = new GZIPInputStream(sourceStream)) {
    ByteStreams.copy(compressor, outputStream);
    compressor.close();
...

final int BUFFER_SIZE = 32;
ByteArrayInputStream is = new ByteArrayInputStream(compressed);
GZIPInputStream gis = new GZIPInputStream(is, BUFFER_SIZE);
StringBuilder string = new StringBuilder();
byte[] data = new byte[BUFFER_SIZE];
int bytesRead;
while ((bytesRead = gis.read(data)) != -1) {
    string.append(new String(data, 0, bytesRead));
...

ByteArrayOutputStream bytes = new ByteArrayOutputStream(compressedData.length);
GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(compressedData));
byte[] buffer = new byte[compressedData.length];
while (true) {
    int bytesRead = in.read(buffer, 0, buffer.length);
    if (bytesRead < 0) {
        return bytes.toByteArray();
    bytes.write(buffer, 0, bytesRead);

byte[] decompressedData;
Inflater decompressor = new Inflater();
decompressor.setInput(compressedData);
ByteArrayOutputStream bos = new ByteArrayOutputStream(compressedData.length);
byte[] buf = new byte[1024];
while (!decompressor.finished()) {
    try {
        int count = decompressor.inflate(buf);
...

Inflater decompressor = new Inflater();
decompressor.setInput(compressedData, off, len);
ByteArrayOutputStream bos = new ByteArrayOutputStream(compressedData.length);
byte[] buf = new byte[1024];
while (!decompressor.finished()) {
    int count = decompressor.inflate(buf);
    bos.write(buf, 0, count);
bos.close();
return bos.toByteArray();

return decompress(data, 0, data.length);

ByteArrayInputStream bais = new ByteArrayInputStream(data);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
decompress(bais, baos);
data = baos.toByteArray();
baos.flush();
baos.close();
bais.close();
return data;
...

ByteArrayInputStream bais2 = new ByteArrayInputStream(data);
CheckedInputStream cis = new CheckedInputStream(bais2, new CRC32());
GZIPInputStream zis = new GZIPInputStream(new BufferedInputStream(cis));
InputStreamReader reader = new InputStreamReader(zis);
BufferedReader br = new BufferedReader(reader);
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = br.readLine()) != null) {
...