Java tutorial
//package com.java2s; /* * Copyright (C) 2016 huanghaibin_dev <huanghaibin_dev@163.com> * WebSite https://github.com/MiracleTimes-Dev * 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. */ public class Main { private static int getWeekViewEndDiff(int year, int month, int day, int weekStart) { java.util.Calendar date = java.util.Calendar.getInstance(); date.set(year, month - 1, day); int week = date.get(java.util.Calendar.DAY_OF_WEEK); if (weekStart == 1) { return 7 - week; } if (weekStart == 2) { return week == 1 ? 0 : 7 - week + 1; } return week == 7 ? 6 : 7 - week - 1; } }