java获取前一天日期

 

java获取前一天日期

 

import java.util.Calendar;

public class Main {
  public static void main(String[] args) {
    // 获取今天的日期
    Calendar today = Calendar.getInstance();
    // 将今天的日期设置为前一天
    Calendar yesterday = Calendar.getInstance();
    yesterday.set(Calendar.DAY_OF_YEAR, today.get(Calendar.DAY_OF_YEAR) - 1);
    // 获取前一天的日期
    int year = yesterday.get(Calendar.YEAR);
    int month = yesterday.get(Calendar.MONTH) + 1;
    int day = yesterday.get(Calendar.DAY_OF_MONTH);
    String date = year + "-" + month + "-" + day;
    System.out.println("昨天的日期是：" + date);
  }
}

 

 

 

 

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