java无符号Byte

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1.无符号byte, 实现了将byte(-128~127) 转换为 (0~255)

class UnsignedByte {

    private short value;

    private byte rawValue;

    private UnsignedByte() {

    }

    public static UnsignedByte toUnsignedByte(byte b) {

        UnsignedByte ub = new UnsignedByte();

        ub.rawValue = b;

        ub.value = (short) ((short) b & 0xFF);

        return ub;

    }

    public static byte toByte(UnsignedByte b) {

        return b.rawValue;

    }

    public static byte toByte(short i) {

        return (byte)i;

    }

}