将String转化为Long，并将Long转化为Date

package org.ljh.test.javaee;

import java.text.SimpleDateFormat;
import java.util.Date;

public class StringToLongToDate {

public static String parseTime(String s){

//将字符串转化为Long类型
Long timeLong = Long.parseLong(s);
//将Long类型转化为Date
Date date = new Date(timeLong);

//将Date类型格式化
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateString = sdf.format(date);
return dateString;

}

public static void main(String[] args){
System.out.println(parseTime("5223456789236"));
}

}