Here you can find the source of createURI()
public static URI createURI()
//package com.java2s; /*/*from w ww . j ava 2 s.co m*/ * Copyright (c) 2012 - 2015, Clark & Parsia, LLC. <http://www.clarkparsia.com> * * 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. */ import java.net.URI; import java.util.UUID; public class Main { /** * Returns a random, unique URI. */ public static URI createURI() { return URI.create("urn:" + UUID.randomUUID()); } public static URI createURI(String uri) { return uri == null || uri.length() == 0 ? createURI() : URI.create(uri); } }