Java tutorial
/** * #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=# * This file is part of the LDP4j Project: * http://www.ldp4j.org/ * * Center for Open Middleware * http://www.centeropenmiddleware.com/ * #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=# * Copyright (C) 2014-2016 Center for Open Middleware. * #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=# * Licensed 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. * #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=# * Artifact : org.ldp4j.framework:ldp4j-server-core:0.2.1 * Bundle : ldp4j-server-core-0.2.1.jar * #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=# */ package org.ldp4j.server.controller; import com.google.common.net.HttpHeaders; public class PreconditionRequiredException extends DiagnosedException { private static final long serialVersionUID = 8286288208444290507L; public PreconditionRequiredException(OperationContext context) { super(context, null, Diagnosis.create().statusCode(MoreHttp.PRECONDITION_REQUIRED_STATUS_CODE) .diagnostic("No %s header specified.", HttpHeaders.IF_MATCH).mandatory(true)); } }