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date9__Calendar_add
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README.md

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* @由于个人水平有限, 难免有些错误, 还请指点:
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* @Author: cpu_code
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* @Date: 2020-07-12 12:03:11
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* @LastEditTime: 2020-09-16 09:04:19
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* @LastEditTime: 2020-09-16 09:07:44
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* @FilePath: \java\README.md
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* @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
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* @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
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- [x] [date6__Calendar](javaAPI/date/date6.java)
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- [x] [date7__Calendar_get](javaAPI/date/date7.java)
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- [x] [date8__Calendar_set](javaAPI/date/date8.java)
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- [x] [date9__Calendar_add](javaAPI/date/date9.java)
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javaAPI/date/date9.java

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/*
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* @由于个人水平有限, 难免有些错误, 还请指点:
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* @Author: cpu_code
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* @Date: 2020-09-16 09:07:57
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* @LastEditTime: 2020-09-16 09:13:44
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* @FilePath: \java\javaAPI\date\date9.java
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* @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
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* @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
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* @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
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* @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
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*/
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package javaAPI.date;
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import java.util.Calendar;
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public class date9 {
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public static void main(String[] args) {
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Calendar cal = Calendar.getInstance();
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// 设置年
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int year = cal.get(Calendar.YEAR);
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// 设置月
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int month = cal.get(Calendar.MONTH) + 1;
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// 设置日
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int dayOfMonth = cal.get(Calendar.DAY_OF_MONTH);
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System.out.println(year + "年" + month + "月" + dayOfMonth + "日");
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cal.add(Calendar.DAY_OF_MONTH, 2);
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cal.add(Calendar.YEAR, -3);
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// 设置年
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year = cal.get(Calendar.YEAR);
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// 设置月
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month = cal.get(Calendar.MONTH) + 1;
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// 设置日
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dayOfMonth = cal.get(Calendar.DAY_OF_MONTH);
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System.out.println(year + "年" + month + "月" + dayOfMonth + '日');
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}
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}
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/*
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2020年9月16日
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2017年9月18日
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*/

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