Java tutorial
/* * Copyright 2012 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package io.netty.handler.codec.socksx.v4; import io.netty.util.internal.ObjectUtil; /** * The status of {@link Socks4CommandResponse}. */ public class Socks4CommandStatus implements Comparable<Socks4CommandStatus> { public static final Socks4CommandStatus SUCCESS = new Socks4CommandStatus(0x5a, "SUCCESS"); public static final Socks4CommandStatus REJECTED_OR_FAILED = new Socks4CommandStatus(0x5b, "REJECTED_OR_FAILED"); public static final Socks4CommandStatus IDENTD_UNREACHABLE = new Socks4CommandStatus(0x5c, "IDENTD_UNREACHABLE"); public static final Socks4CommandStatus IDENTD_AUTH_FAILURE = new Socks4CommandStatus(0x5d, "IDENTD_AUTH_FAILURE"); public static Socks4CommandStatus valueOf(byte b) { switch (b) { case 0x5a: return SUCCESS; case 0x5b: return REJECTED_OR_FAILED; case 0x5c: return IDENTD_UNREACHABLE; case 0x5d: return IDENTD_AUTH_FAILURE; } return new Socks4CommandStatus(b); } private final byte byteValue; private final String name; private String text; public Socks4CommandStatus(int byteValue) { this(byteValue, "UNKNOWN"); } public Socks4CommandStatus(int byteValue, String name) { this.name = ObjectUtil.checkNotNull(name, "name"); this.byteValue = (byte) byteValue; } public byte byteValue() { return byteValue; } public boolean isSuccess() { return byteValue == 0x5a; } @Override public int hashCode() { return byteValue; } @Override public boolean equals(Object obj) { if (!(obj instanceof Socks4CommandStatus)) { return false; } return byteValue == ((Socks4CommandStatus) obj).byteValue; } @Override public int compareTo(Socks4CommandStatus o) { return byteValue - o.byteValue; } @Override public String toString() { String text = this.text; if (text == null) { this.text = text = name + '(' + (byteValue & 0xFF) + ')'; } return text; } }