Java TimeUnit Convert toTime(final String value, final TimeUnit inputUnit, final TimeUnit outUnit)

Description

toTime.

License

Apache License

Parameter

Parameter	Description
value	value
inputUnit	inputUnit
outUnit	outUnit

Return

long

Declaration

public static long toTime(final String value, final TimeUnit inputUnit, final TimeUnit outUnit) 

Method Source Code

//package com.java2s;
/*/*from  w w  w .  j a va 2  s.c  om*/
 *
 *  Copyright 2017 Netflix, Inc.
 *
 *     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.util.concurrent.TimeUnit;

public class Main {
    /**
     * toTime.
     *
     * @param value     value
     * @param inputUnit inputUnit
     * @param outUnit   outUnit
     * @return long
     */
    public static long toTime(final String value, final TimeUnit inputUnit, final TimeUnit outUnit) {
        final String[] parsed = parseTime(value.trim());
        return outUnit.convert(Long.parseLong(parsed[0].trim().trim()), unitFor(parsed[1].trim(), inputUnit));
    }

    private static String[] parseTime(final String value) {
        final char[] chars = value.toCharArray();
        int i = 0;
        while (i < chars.length && (chars[i] == '-' || Character.isDigit(chars[i]))) {
            i++;
        }
        return new String[] { value.substring(0, i), value.substring(i) };
    }

    /**
     * unitFor.
     *
     * @param inputUnit   inputUnit
     * @param defaultUnit defaultUnit
     * @return TimeUnit
     */
    public static TimeUnit unitFor(final String inputUnit, final TimeUnit defaultUnit) {
        final String unit = inputUnit.trim().toLowerCase();
        if (unit.isEmpty() || unit.equals("l")) {
            if (defaultUnit == null) {
                throw new IllegalArgumentException("Time unit is not specified");
            }
            return defaultUnit;
        } else if (unit.equals("d") || unit.startsWith("day")) {
            return TimeUnit.DAYS;
        } else if (unit.equals("h") || unit.startsWith("hour")) {
            return TimeUnit.HOURS;
        } else if (unit.equals("m") || unit.startsWith("min")) {
            return TimeUnit.MINUTES;
        } else if (unit.equals("s") || unit.startsWith("sec")) {
            return TimeUnit.SECONDS;
        } else if (unit.equals("ms") || unit.startsWith("msec")) {
            return TimeUnit.MILLISECONDS;
        } else if (unit.equals("us") || unit.startsWith("usec")) {
            return TimeUnit.MICROSECONDS;
        } else if (unit.equals("ns") || unit.startsWith("nsec")) {
            return TimeUnit.NANOSECONDS;
        }
        throw new IllegalArgumentException("Invalid time unit " + unit);
    }
}

Related

1. toSeconds(long timeout, TimeUnit unit)
2. toSeconds(long value, TimeUnit unit)
3. toSIAbbreviation(final TimeUnit timeUnit)
4. toString(TimeUnit unit)
5. toString(TimeUnit unit)
6. toTimePrecision(final TimeUnit t)
7. toTimeUnits(long time)