Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_YEAR,calendar.get(Calendar.DAY_OF_YEAR)-1);
System.out.println(calendar.getTime());
calendar.set(Calendar.DAY_OF_YEAR,calendar.get(Calendar.DAY_OF_YEAR)-1);
System.out.println(calendar.getTime());
解决方案 »
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