java获取最近12个月

• jdk1.8后写法

/**
   * 获取最近12个月
   */
public static void main(String[] args){
        LocalDate today = LocalDate.now();
        for(long i = 1L;i <= 12L; i++){
            LocalDate localDate = today.minusMonths(i);
            String ss = localDate.toString().substring(0,7);
            System.out.println(localDate);
            System.out.println(ss);
            System.out.println("==============");
        }
    }

• jdk1.8前写法

 /**
   * 获取最近12个月
   */
public static void main(String[] args) {
        String[] last12Months = new String[12];
        Calendar cal = Calendar.getInstance();
        //如果当前日期大于二月份的天数28天或者29天会导致计算月份错误，会多出一个三月份，故设置一个靠前日期解决此问题
        cal.set(Calendar.DAY_OF_MONTH, 1);
        for (int i = 0; i < 12; i++) {
            last12Months[11 - i] = cal.get(Calendar.YEAR) + "-" + (cal.get(Calendar.MONTH) + 1);
            cal.set(Calendar.MONTH, cal.get(Calendar.MONTH) - 1); //逐次往前推1个月
        }       
}