静态方法

public static String getDate() {        Calendar ca = Calendar.getInstance();        int year = ca.get(Calendar.YEAR);//获取年份        int month = ca.get(Calendar.MONTH) + 1;//获取月份        int day = ca.get(Calendar.DATE);//获取日        int hour = ca.get(Calendar.HOUR_OF_DAY);//小时        int minute = ca.get(Calendar.MINUTE);//分;        int second = ca.get(Calendar.SECOND);//秒        String time;        if (minute < 10 && second < 10) {            time = year + "-" + month + "-" + day + " " + hour + ":" + "0" + minute + ":" + "0" + second;        } else if (minute < 10 && second >= 10) {            time = year + "-" + month + "-" + day + " " + hour + ":" + "0" + minute + ":" + second;        } else if (minute >= 10 && second < 10) {            time = year + "-" + month + "-" + day + " " + hour + ":" + minute + ":" + "0" + second;        } else {            time = year + "-" + month + "-" + day + " " + hour + ":" + minute + ":" + second;        }        return time;    }