Sending and receiving Integers on Sockets

[angio 0]

I was curious if anyone has some other ideas to send/receive an integer without using a wrapper-class for OutputStream/InputStream

    public int readInt() throws IOException {
        int number = 0;
        byte[] bytes = new byte[4];
        for (int i = 0; i < 4; i++) {
            bytes[i] = (byte) inputStream.read();
        }
        for (int i = 3; i >= 0; i--) {
            byte tmp = bytes[i];
            for (int j = 7; j >= 0; j--) {
                if (((tmp >> j) & 1) == 1) number |= 1 << (j + (i * 8));
            }
        }
        return number;
    }

    public void send(int integer) throws IOException {
        synchronized (lock) {
            byte[] split = new byte[4];
            for (int i = 0; i < split.length; i++) {
                split[i] = (byte) ((integer >> (i * 8)) & 255);
            }
            outputStream.write(OpCode.INTEGER.ordinal());
            outputStream.write(split);
            outputStream.flush();
        }
    }

 

Edited January 7, 2021 by angio

[Neffarion 469]

17 hours ago, angio said:

I was curious if anyone has some other ideas to send/receive an integer without using a wrapper-class for OutputStream/InputStream

    public int readInt() throws IOException {
        int number = 0;
        byte[] bytes = new byte[4];
        for (int i = 0; i < 4; i++) {
            bytes[i] = (byte) inputStream.read();
        }
        for (int i = 3; i >= 0; i--) {
            byte tmp = bytes[i];
            for (int j = 7; j >= 0; j--) {
                if (((tmp >> j) & 1) == 1) number |= 1 << (j + (i * 8));
            }
        }
        return number;
    }

    public void send(int integer) throws IOException {
        synchronized (lock) {
            byte[] split = new byte[4];
            for (int i = 0; i < split.length; i++) {
                split[i] = (byte) ((integer >> (i * 8)) & 255);
            }
            outputStream.write(OpCode.INTEGER.ordinal());
            outputStream.write(split);
            outputStream.flush();
        }
    }

 

Do you want to work solely with bitwise operations?
Because otherwise you can use the ByteBuffer class. Especially for the readInt

ByteBuffer.wrap(byteArr).getInt()