package com.lxzn.zip4j; import com.lxzn.framework.utils.date.DateUtil; import org.junit.Test; import java.util.Date; public class TestDateUtil { @Test public void testFormat() { String str = "2020-05-29 10:59:59.940"; Date date = DateUtil.toDate(str, DateUtil.STR_DATE_TIME); String ddd = DateUtil.format(date, DateUtil.STR_DATE_TIME); System.out.println(ddd); } }