Java tutorial
/* * Copyright 2015-present Stephen Colebourne * * 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. */ package org.joda.railmodel; import static org.joda.railmodel.Stations.*; import java.io.File; import java.nio.charset.StandardCharsets; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import com.google.common.base.Joiner; import com.google.common.collect.ImmutableList; import com.google.common.io.Files; /** * Calculates journey times for SW London with Crossrail 2 in place. */ public class Crossrail2BalhamSWLondonModel extends BaseLondonModel { public static void main(String[] args) throws Exception { Crossrail2BalhamSWLondonModel model = new Crossrail2BalhamSWLondonModel(); ImmutableList<Station> starts = ImmutableList.of(CSS, LHD, EPS, SNL, WCP, MOT, SHP, FLW, KNG, HMC, SUR, NEM, RAY, WIM, EAD, UMD, USW, UTB, BAL, SRH, STE); ImmutableList<Station> ends = ImmutableList.of(VIC, TCR, EUS, AGL, WAT, UGP, UOX, BDS, CHX, ULS, UGS, UWS, UBS, UWM, UTM, ZFD, UBH, LBG, UBK, MOG, UOS, UHL, UCL, USP, CWF); List<String> output = new ArrayList<>(); output.add("Modelling for SW London with Crossrail 2 via Balham" + NEWLINE); output.add("===================================================" + NEWLINE); output.add("This uses CR2 via Balham, with best efforts guesses of interchange times." + NEWLINE); output.add(NEWLINE); appendDocs(output); appendTotals(output, starts, ends, model); appendSeparator(output); for (Iterator<Station> it = starts.iterator(); it.hasNext();) { Station start = it.next(); for (Station end : ends) { String explain = model.explain(start, end); output.add(explain); output.add(NEWLINE); } if (it.hasNext()) { appendSeparator(output); } } appendStations(output); output.add(NEWLINE); output.add("Feel free to send a pull request for errors and enhancments!" + NEWLINE); File file = new File("CR2-SWLondon.md"); String result = Joiner.on("").join(output); Files.write(result, file, StandardCharsets.UTF_8); System.out.println(result); } Crossrail2BalhamSWLondonModel() { setup(); } private void setup() { // WAT addRoute(SWML_TWI_WAT_4); addRoute(SWML_LHD_WAT_4); addRoute(SWML_SUR_WAT_FAST_6); addRoute(SWML_SUR_WAT_SLOW_4); // CR2 // CLJ-CKR known as 3 mins // CKR-VIC and VIC-TCR are similar distances // BAL-CLJ set at 3mins although 4mins more likely // WIM-BAL set at 4mins Route wimagl = Route.of("CR2", "CR2", 30, stations(WIM, BAL, CLJ), times(4, 3), CR2_CLJ_AGL); Route rayagl = Route.of("CR2", "CR2", 20, stations(RAY, WIM), times(4), wimagl); Route nemagl = Route.of("CR2", "CR2", 10, stations(NEM, RAY), times(3), rayagl); Route motagl = Route.of("CR2", "CR2", 10, stations(MOT, RAY), times(3), rayagl); Route kngagl = Route.of("CR2", "CR2", 6, stations(KNG, NEM), times(7), nemagl); Route shpagl = Route.of("CR2", "CR2", 4, stations(SHP, FLW, KNG), times(13, 10), kngagl); Route hmcagl = Route.of("CR2", "CR2", 4, stations(HMC, SUR, NEM), times(8, 5), nemagl); Route cssagl = Route.of("CR2", "CR2", 4, stations(CSS, MOT), times(11), motagl); Route epsagl = Route.of("CR2", "CR2", 6, stations(EPS, SNL, WCP, MOT), times(5, 3, 3), motagl); addRoute(shpagl); addRoute(kngagl); addRoute(hmcagl); addRoute(cssagl); addRoute(epsagl); // Southern addRoute(SOUTHERN_BAL_VIC); addRoute(SOUTHERN_SRH_VIC); addRoute(THAMESLINK_EPH_ZFD); addRoute(THAMESLINK_STE_ZFD); addRoute(SOUTHERN_STE_LBG); addRoute(SOUTHEAST_HNH_VIC); // Tube lines addRoute(NORTHERN_CITY_NB); addRoute(NORTHERN_CITY_SB); addRoute(NORTHERN_WEST_NB); addRoute(NORTHERN_WEST_SB); addRoute(VICTORIA_NB); addRoute(BAKERLOO_NB); addRoute(JUBILEE_EB); addRoute(JUBILEE_NB); addRoute(WNC_NB); addRoute(DISTRICT_EB); addRoute(CENTRAL_EB); addRoute(CENTRAL_WB); addRoute(CR1_EB); addRoute(CR1_WB); // change CR2 to WAT at SUR, assume 6 tracks between Surbiton and New Malden // gaps between fast trains work out at 4-6 mins with 10min gap twice an hour // assume a sensible timetable minimises interchange time addChange(Change.of(SUR, hmcagl, SWML_SUR_WAT_FAST_6, 3, 5)); addChange(Change.of(SUR, hmcagl, SWML_SUR_WAT_SLOW_4, 3, 5)); // change CR2 to WAT at RAY, assume 8tph at gaps of 6 and 9 minutes Change xraycr2wat = Change.of(RAY, rayagl, SWML_RAY_WAT_8, 1, 9); addChange(xraycr2wat); // change WAT to CR2 at RAY, 20tph at gaps of 2 and 4 minutes Change xraywatcr2 = Change.of(RAY, SWML_RAY_WAT_8, rayagl, 1, 5); addChange(xraywatcr2); // change at Wimbledon Change xwimwatcr2 = Change.of(WIM, SWML_WIM_WAT_12, wimagl, 4, 6); Change xwimcr2wat = Change.of(WIM, wimagl, SWML_WIM_WAT_12, 4, 10); addChange(xwimwatcr2); addChange(xwimcr2wat); // gaps of 3 to 6 mins // change at Balham addChange(Change.of(BAL, wimagl, NORTHERN_CITY_NB, 2, 4)); addChange(Change.of(BAL, NORTHERN_CITY_NB, wimagl, 2, 4)); addChange(Change.of(BAL, SOUTHERN_BAL_VIC, NORTHERN_CITY_NB, 4, 6)); // change at Clapham Junction Change xcljwatcr2 = Change.of(CLJ, SWML_CLJ_WAT_18, CR2_CLJ_AGL, 4, 6); addChange(xcljwatcr2); addChange(Change.of(CLJ, SWML_CLJ_WAT_18, SOUTHERN_BAL_VIC, 4, 6)); addChange(Change.of(CLJ, SOUTHERN_BAL_VIC, CR2_CLJ_AGL, 4, 6)); addChange(Change.of(CLJ, SOUTHERN_BAL_VIC, SWML_CLJ_WAT_18, 4, 6)); // prefer change at RAY to WIM/CLJ if choice addPreferredChange(xraywatcr2, xwimwatcr2); addPreferredChange(xraywatcr2, xcljwatcr2); addPreferredChange(xraycr2wat, xwimcr2wat); // change at Victoria addChange(Change.of(VIC, CR2_VIC_AGL, DISTRICT_EB, 4, 6)); addChange(Change.of(VIC, CR2_VIC_AGL, VICTORIA_NB, 4, 6)); addChange(Change.of(VIC, VICTORIA_NB, DISTRICT_EB, 4, 6)); addChange(Change.of(VIC, SOUTHERN_BAL_VIC, DISTRICT_EB, 4, 6)); addChange(Change.of(VIC, SOUTHERN_BAL_VIC, VICTORIA_NB, 4, 6)); addChange(Change.of(VIC, SOUTHEAST_HNH_VIC, DISTRICT_EB, 4, 6)); addChange(Change.of(VIC, SOUTHEAST_HNH_VIC, VICTORIA_NB, 4, 6)); // change at TCR addChange(Change.of(TCR, CR2_VIC_AGL, CR1_EB, 3, 5)); addChange(Change.of(TCR, CR2_VIC_AGL, CR1_WB, 3, 5)); addChange(Change.of(TCR, CR2_VIC_AGL, CENTRAL_EB, 4, 6)); addChange(Change.of(TCR, CR2_VIC_AGL, NORTHERN_WEST_NB, 3, 5)); addChange(Change.of(TCR, CR2_VIC_AGL, NORTHERN_WEST_SB, 3, 5)); // change at Euston (pointless, might as well change at Angel) // addChange(Change.of(EUS, wimagl, unortherncitysb, 4, 8)); // change at Angel addChange(Change.of(AGL, CR2_VIC_AGL, NORTHERN_CITY_SB, 3, 6)); commonChanges(NORTHERN_CITY_NB); } }