Java中获取当前时间并格式化

Java中获取当前时间并格式

import java.text.SimpleDateFormat;
import java.util.Calendar;

public class Main {

    public static void main(String[] args) {
        SimpleDateFormat sdf = new SimpleDateFormat();
        sdf.applyPattern("yyyy-MM-dd HH:mm:ss");
        Calendar calendar = Calendar.getInstance();
        System.out.println(sdf.format(calendar.getTime())); // 输出 2020-10-20 20:17:31
    }
}