Java SQL Date stringToMillis(String str)

Description

string To Millis

License

Apache License

Declaration

public static long stringToMillis(String str) 

Method Source Code

//package com.java2s;
/**//from w w w  .ja  v a 2s  .c om
 * 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.sql.Date;

public class Main {
    public static final String DEFAULT_DATE_PATTERN = "yyyy-MM-dd";
    public static final String DEFAULT_DATETIME_PATTERN_WITHOUT_MILLISECONDS = "yyyy-MM-dd HH:mm:ss";
    public static final String DEFAULT_DATETIME_PATTERN_WITH_MILLISECONDS = "yyyy-MM-dd HH:mm:ss.SSS";

    public static long stringToMillis(String str) {
        if (isAllDigits(str)) {
            return Long.parseLong(str);
        } else if (str.length() == 10) {
            return stringToDate(str, DEFAULT_DATE_PATTERN).getTime();
        } else if (str.length() == 19) {
            return stringToDate(str,
                    DEFAULT_DATETIME_PATTERN_WITHOUT_MILLISECONDS)
                    .getTime();
        } else if (str.length() == 23) {
            return stringToDate(str,
                    DEFAULT_DATETIME_PATTERN_WITH_MILLISECONDS).getTime();
        } else {
            throw new IllegalArgumentException(
                    "There is no valid date pattern for  : " + str);
        }
    }

    private static boolean isAllDigits(String str) {
        for (int i = 0, n = str.length(); i < n; i++) {
            if (Character.isDigit(str.charAt(i)) == false)
                return false;
        }
        return true;
    }

    public static Date stringToDate(String str) {
        return stringToDate(str, DEFAULT_DATE_PATTERN);
    }

    public static Date stringToDate(String str, String pattern) {
        Date date = null;
        try {
            date = Date.valueOf(str);
        } catch (Exception e) {
            throw new IllegalArgumentException("'" + str
                    + "' is not a valid date of pattern '" + pattern + "'",
                    e);
        }
        return date;
    }
}

Related

1. issue20()
2. now()
3. nowPlus(int parts, int value)
4. parseStringValue(Class returnType, String value)
5. serialize(Instant sourceValue)
6. toAge(String birthDay)
7. today()
8. today()
9. today()