Java Utililty Methods ByteBuffer to String

byte[] buffer = new byte[length];
buf.get(buffer);
return new String(buffer);

int size = readVarInt(buff);
byte[] bytes = new byte[size];
buff.get(bytes);
return new String(bytes, StandardCharsets.UTF_8);

char[] chars = new char[len];
for (int i = 0; i < len; i++) {
    int x = buff.get() & 0xff;
    if (x < 0x80) {
        chars[i] = (char) x;
    } else if (x >= 0xe0) {
        chars[i] = (char) (((x & 0xf) << 12) + ((buff.get() & 0x3f) << 6) + (buff.get() & 0x3f));
    } else {
...

int i = readVarInt(buffer);
if (i > MAX_STRING_LENGTH * 4) {
    throw new IOException("The received encoded string buffer length is longer than maximum allowed (" + i
            + " > " + MAX_STRING_LENGTH * 4 + ")");
if (i < 0) {
    throw new IOException("The received encoded string buffer length is less than zero! Weird string!");
try {
    byte[] bytes = new byte[i];
    buffer.get(bytes);
    String s = new String(bytes, StandardCharsets.UTF_8);
    if (s.length() > MAX_STRING_LENGTH) {
        throw new IOException("The received string length is longer than maximum allowed (" + s.length()
                + " > " + MAX_STRING_LENGTH + ")");
    } else {
        return s;
} catch (UnsupportedEncodingException e) {
    throw new IOException(e);

byte[] data = new byte[256];
int i = 0, value = 0;
for (i = 0; (i < data.length) && ((value = buffer.get()) > 0); ++i) {
    data[i] = (byte) value;
return new String(data, 0, i);

ByteArrayOutputStream bytes = new ByteArrayOutputStream();
byte b = -1;
while ((b = byteBuffer.get()) != 0) {
    bytes.write(b);
return new String(bytes.toByteArray());

int len = byteBuffer.getInt();
if (len <= 1) {
    return "";
} else {
    byte[] b = new byte[len];
    byteBuffer.get(b);
    return new String(b, 0, len - 1);

return new String(readByteArray(logBuf));

byte[] bytes = new byte[buffer.remaining()];
buffer.get(bytes);
return new String(bytes, encoding);

return new String(b.array(), b.arrayOffset() + b.position(), b.remaining(), charset);