Java Utililty Methods InputStream Read Long

return ((long) (readInt(i)) << 32) + (readInt(i) & 0xFFFFFFFFL);

long result = 0;
for (int shift = 56; shift >= 0; shift -= 8) {
    long x = in.read();
    if (x < 0)
        throw new IOException("EOF");
    result |= (x << shift);
return result;
...

long ch8 = in.read();
long ch7 = in.read();
long ch6 = in.read();
long ch5 = in.read();
long ch4 = in.read();
long ch3 = in.read();
long ch2 = in.read();
long ch1 = in.read();
...

byte[] b = new byte[8];
read(in, b, 0, b.length);
long l = b[0] & 0xff;
l |= (long) (b[1] & 0xff) << 8;
l |= (long) (b[2] & 0xff) << 16;
l |= (long) (b[3] & 0xff) << 24;
l |= (long) (b[4] & 0xff) << 32;
l |= (long) (b[5] & 0xff) << 40;
...

long b0 = safeRead(in);
long b1 = safeRead(in);
long b2 = safeRead(in);
long b3 = safeRead(in);
long b4 = safeRead(in);
long b5 = safeRead(in);
long b6 = safeRead(in);
long b7 = safeRead(in);
...

return ((long) (readInt(in)) << 32) + (readInt(in) & 0xffffffffL);

byte b[] = new byte[8];
int cnt = read(in, b);
if (cnt < 8) {
    if (cnt <= 0) {
        throw new IOException("readLong: the imput stream is empty.");
    } else {
        throw new IOException("readLong: not enought bytes.");
return byteArrayToLong(b);

return ((long) in.read() << 56) | ((long) in.read() << 48) | ((long) in.read() << 40)
        | ((long) in.read() << 32) | ((long) in.read() << 24) | ((long) in.read() << 16)
        | ((long) in.read() << 8) | (long) in.read();

byte[] b = new byte[8];
read(in, b, 0, b.length);
long l = (long) (b[0] & 0xff);
l |= (long) (b[1] & 0xff) << 8;
l |= (long) (b[2] & 0xff) << 16;
l |= (long) (b[3] & 0xff) << 24;
l |= (long) (b[4] & 0xff) << 32;
l |= (long) (b[5] & 0xff) << 40;
...

long b1 = in.read();
long b2 = in.read();
long b3 = in.read();
long b4 = in.read();
long b5 = in.read();
long b6 = in.read();
long b7 = in.read();
long b8 = in.read();
...