1 /*
2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
77 import java.time.format.TextStyle;
78 import java.time.temporal.ChronoField;
79 import java.time.temporal.TemporalField;
80 import java.time.temporal.UnsupportedTemporalTypeException;
81 import java.time.temporal.ValueRange;
82 import java.util.Arrays;
83 import java.util.Locale;
84 import java.util.Objects;
85
86 import sun.util.calendar.CalendarDate;
87
88 /**
89 * An era in the Japanese Imperial calendar system.
90 * <p>
91 * This class defines the valid eras for the Japanese chronology.
92 * Japan introduced the Gregorian calendar starting with Meiji 6.
93 * Only Meiji and later eras are supported;
94 * dates before Meiji 6, January 1 are not supported.
95 * The number of the valid eras may increase, as new eras may be
96 * defined by the Japanese government. Once an era is defined,
97 * subsequent versions of this class will add a singleton instance
98 * for it. The defined era is expected to have a consecutive integer
99 * associated with it.
100 *
101 * @implSpec
102 * This class is immutable and thread-safe.
103 *
104 * @since 1.8
105 */
106 public final class JapaneseEra
107 implements Era, Serializable {
108
109 // The offset value to 0-based index from the era value.
110 // i.e., getValue() + ERA_OFFSET == 0-based index
111 static final int ERA_OFFSET = 2;
112
113 static final sun.util.calendar.Era[] ERA_CONFIG;
114
115 /**
116 * The singleton instance for the 'Meiji' era (1868-01-01 - 1912-07-29)
117 * which has the value -1.
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1 /*
2 * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
77 import java.time.format.TextStyle;
78 import java.time.temporal.ChronoField;
79 import java.time.temporal.TemporalField;
80 import java.time.temporal.UnsupportedTemporalTypeException;
81 import java.time.temporal.ValueRange;
82 import java.util.Arrays;
83 import java.util.Locale;
84 import java.util.Objects;
85
86 import sun.util.calendar.CalendarDate;
87
88 /**
89 * An era in the Japanese Imperial calendar system.
90 * <p>
91 * This class defines the valid eras for the Japanese chronology.
92 * Japan introduced the Gregorian calendar starting with Meiji 6.
93 * Only Meiji and later eras are supported;
94 * dates before Meiji 6, January 1 are not supported.
95 * The number of the valid eras may increase, as new eras may be
96 * defined by the Japanese government. Once an era is defined,
97 * future versions of the platform may add a singleton instance
98 * for it. The defined era is expected to have a consecutive integer
99 * associated with it.
100 *
101 * @implSpec
102 * This class is immutable and thread-safe.
103 *
104 * @since 1.8
105 */
106 public final class JapaneseEra
107 implements Era, Serializable {
108
109 // The offset value to 0-based index from the era value.
110 // i.e., getValue() + ERA_OFFSET == 0-based index
111 static final int ERA_OFFSET = 2;
112
113 static final sun.util.calendar.Era[] ERA_CONFIG;
114
115 /**
116 * The singleton instance for the 'Meiji' era (1868-01-01 - 1912-07-29)
117 * which has the value -1.
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