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Java example source code file (PeriodPrinter.java)

This example Java source code file (PeriodPrinter.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

ioexception, locale, periodprinter, readableperiod, util

The PeriodPrinter.java Java example source code

/*
 *  Copyright 2001-2005 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.time.format;

import java.io.IOException;
import java.io.Writer;
import java.util.Locale;

import org.joda.time.ReadablePeriod;

/**
 * Internal interface for printing textual representations of time periods.
 * <p>
 * Application users will rarely use this class directly. Instead, you
 * will use one of the factory classes to create a {@link PeriodFormatter}.
 * <p>
 * The factory classes are:<br />
 * - {@link PeriodFormatterBuilder}<br />
 * - {@link PeriodFormat}<br />
 * - {@link ISOPeriodFormat}<br />
 *
 * @author Brian S O'Neill
 * @author Stephen Colebourne
 * @since 1.0
 * @see PeriodFormatter
 * @see PeriodFormatterBuilder
 * @see PeriodFormat
 */
public interface PeriodPrinter {

    /**
     * Returns the exact number of characters produced for the given period.
     * 
     * @param period  the period to use
     * @param locale  the locale to use
     * @return the estimated length
     */
    int calculatePrintedLength(ReadablePeriod period, Locale locale);

    /**
     * Returns the amount of fields from the given period that this printer
     * will print.
     * 
     * @param period  the period to use
     * @param stopAt stop counting at this value, enter a number ≥ 256 to count all
     * @param locale  the locale to use
     * @return amount of fields printed
     */
    int countFieldsToPrint(ReadablePeriod period, int stopAt, Locale locale);

    //-----------------------------------------------------------------------
    /**
     * Prints a ReadablePeriod to a StringBuffer.
     *
     * @param buf  the formatted period is appended to this buffer
     * @param period  the period to format
     * @param locale  the locale to use
     */
    void printTo(StringBuffer buf, ReadablePeriod period, Locale locale);

    /**
     * Prints a ReadablePeriod to a Writer.
     *
     * @param out  the formatted period is written out
     * @param period  the period to format
     * @param locale  the locale to use
     */
    void printTo(Writer out, ReadablePeriod period, Locale locale) throws IOException;

}

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