java 日期 long转string_Java long和Date互转String和Date互转

import java.text.DateFormat;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

/**

* @Author GaoYongQin

* @create 2019/4/28 13:57

*/

public class DateUtils {

/**

* long转date

* @param dateLong

* @return

*/

public Date longToDate(long dateLong){

Date date = new Date(dateLong);

return date;

}

/**

* date转long

* @param date

* @return

*/

public long dateToLong(Date date){

long dateLong = date.getTime();

return  dateLong;

}

/**

* string转date

* @param str

* @return

* @throws ParseException

*/

public Date stringToDate(String str) throws ParseException {

DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

Date date = df.parse(str);

return date;

}

/**

* date转string

* @param date

* @return

*/

public String dateToString(Date date){

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String str = sdf.format(date);

return str ;

}

}