时间戳转换为时间字符串

public void getDate(String unixDate) {
  
   SimpleDateFormat fm1 = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
   SimpleDateFormat fm2 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
   long unixLong = 0;
   String date = "";
   try {
   unixLong = Long.parseLong(unixDate) * 1000;
   } catch(Exception ex) {
   System.out.println("String转换Long错误，请确认数据可以转换！");
   }

   try {
   date = fm1.format(unixLong);
   date = fm2.format(new Date(date));
   } catch(Exception ex) {
   System.out.println("String转换Date错误，请确认数据可以转换！");
   }
   System.out.println(date);
   }