MonthsInYear.java Source code

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Here is the source code for MonthsInYear.java

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/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/**
 * Display the numnber of days in each month of the specified year.
 */

import java.time.Month;
import java.time.Year;
import java.time.YearMonth;
import java.time.DateTimeException;

import java.io.PrintStream;
import java.lang.NumberFormatException;

public class MonthsInYear {
    public static void main(String[] args) {
        int year = 0;

        if (args.length <= 0) {
            System.out.printf("Usage: MonthsInYear <year>%n");
            throw new IllegalArgumentException();
        }

        try {
            year = Integer.parseInt(args[0]);
        } catch (NumberFormatException nexc) {
            System.out.printf("%s is not a properly formatted number.%n", args[0]);
            throw nexc; // Rethrow the exception.
        }

        try {
            Year test = Year.of(year);
        } catch (DateTimeException exc) {
            System.out.printf("%d is not a valid year.%n", year);
            throw exc; // Rethrow the exception.
        }

        System.out.printf("For the year %d:%n", year);
        for (Month month : Month.values()) {
            YearMonth ym = YearMonth.of(year, month);
            System.out.printf("%s: %d days%n", month, ym.lengthOfMonth());
        }
    }
}