Here you can find the source of parseDateWithLeniency(String str, String[] parsePatterns, boolean lenient)
Parses a string representing a date by trying a variety of different parsers.
The parse will try each parse pattern in turn.
| Parameter | Description |
|---|---|
| str | the date to parse, not null |
| parsePatterns | the date format patterns to use, see SimpleDateFormat, not null |
| lenient | Specify whether or not date/time parsing is to be lenient. |
| Parameter | Description |
|---|---|
| IllegalArgumentException | if the date string or pattern array is null |
| ParseException | if none of the date patterns were suitable |
private static Date parseDateWithLeniency(String str, String[] parsePatterns, boolean lenient) throws ParseException
//package com.java2s; /*//from www.j a v a2s . c o m * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF 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. */ import java.text.ParseException; import java.text.ParsePosition; import java.text.SimpleDateFormat; import java.util.Date; public class Main { /** * <p>Parses a string representing a date by trying a variety of different parsers.</p> * * <p>The parse will try each parse pattern in turn. * A parse is only deemed successful if it parses the whole of the input string. * If no parse patterns match, a ParseException is thrown.</p> * * @param str the date to parse, not null * @param parsePatterns the date format patterns to use, see SimpleDateFormat, not null * @param lenient Specify whether or not date/time parsing is to be lenient. * @return the parsed date * @throws IllegalArgumentException if the date string or pattern array is null * @throws ParseException if none of the date patterns were suitable * @see java.util.Calender#isLenient() */ private static Date parseDateWithLeniency(String str, String[] parsePatterns, boolean lenient) throws ParseException { if (str == null || parsePatterns == null) { throw new IllegalArgumentException( "Date and Patterns must not be null"); } SimpleDateFormat parser = new SimpleDateFormat(); parser.setLenient(lenient); ParsePosition pos = new ParsePosition(0); for (String parsePattern : parsePatterns) { String pattern = parsePattern; // LANG-530 - need to make sure 'ZZ' output doesn't get passed to SimpleDateFormat if (parsePattern.endsWith("ZZ")) { pattern = pattern.substring(0, pattern.length() - 1); } parser.applyPattern(pattern); pos.setIndex(0); String str2 = str; // LANG-530 - need to make sure 'ZZ' output doesn't hit SimpleDateFormat as it will ParseException if (parsePattern.endsWith("ZZ")) { str2 = str.replaceAll("([-+][0-9][0-9]):([0-9][0-9])$", "$1$2"); } Date date = parser.parse(str2, pos); if (date != null && pos.getIndex() == str2.length()) { return date; } } throw new ParseException("Unable to parse the date: " + str, -1); } }