请教：|= 这是个什么操作符
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

/* Wire Format
 * 1 1 1 1 1 1
 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 * | Magic |Flags| ZERO |
 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 * | Candidate ID |
 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 * | |
 * | Vote Count (only in response) |
 * | |
 * | |
 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 */
public class VoteMsgBinCoder implements VoteMsgCoder {

// manifest constants for encoding
public static final int MIN_WIRE_LENGTH = 4;
public static final int MAX_WIRE_LENGTH = 16;
public static final int MAGIC = 0x5400;
public static final int MAGIC_MASK = 0xfc00;
public static final int MAGIC_SHIFT = 8;
public static final int RESPONSE_FLAG = 0x0200;
public static final int INQUIRE_FLAG = 0x0100;

public byte[] toWire(VoteMsg msg) throws IOException {
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
DataOutputStream out = new DataOutputStream(byteStream); // converts
// ints

short magicAndFlags = MAGIC;
if (msg.isInquiry()) {
magicAndFlags |= INQUIRE_FLAG;
}
if (msg.isResponse()) {
magicAndFlags |= RESPONSE_FLAG;
}
out.writeShort(magicAndFlags);
// We know the candidate ID will fit in a short: it's > 0 && < 1000
out.writeShort((short) msg.getCandidateID());
if (msg.isResponse()) {
out.writeLong(msg.getVoteCount());
}
out.flush();
byte[] data = byteStream.toByteArray();
return data;
}

public VoteMsg fromWire(byte[] input) throws IOException {
// sanity checks
if (input.length < MIN_WIRE_LENGTH) {
throw new IOException("Runt message");
}
ByteArrayInputStream bs = new ByteArrayInputStream(input);
DataInputStream in = new DataInputStream(bs);
int magic = in.readShort();
if ((magic & MAGIC_MASK) != MAGIC) {
throw new IOException("Bad Magic #: "
+ ((magic & MAGIC_MASK) >> MAGIC_SHIFT));
}
boolean resp = ((magic & RESPONSE_FLAG) != 0);
boolean inq = ((magic & INQUIRE_FLAG) != 0);
int candidateID = in.readShort();
if (candidateID < 0 || candidateID > 1000) {
throw new IOException("Bad candidate ID: " + candidateID);
}
long count = 0;
if (resp) {
count = in.readLong();
if (count < 0) {
throw new IOException("Bad vote count: " + count);
}
}
// Ignore any extra bytes
return new VoteMsg(resp, inq, candidateID, count);
}
}

------解决方案--------------------
这是赋值操作符
a |= b
意思为 a = a|b
------解决方案--------------------
我感觉那是逻辑运算符 仅供参考啊
------解决方案--------------------
a=a或b的意思,
a是真则结果为真，a是假的话，如果b为真，则也是真。

探讨

这是赋值操作符
a |= b
意思为 a = a|b

------解决方案--------------------
或等于
位运算符，按位或
------解决方案--------------------
或等于，位运算符

a |= b 等价于 a = a|b 
| ：当两边操作数的位有一边为1时，结果为1，否则为0