collect (Collectors.toList ()) Also, Collectors.toList () will return the List interface, not the concrete implementation ArrayList. parseLong() or Long.valueOf() method to get the corresponding primitive long value or value of Long wrapper class, respectively. The input string is a sequence of characters that can be interpreted as a numeric value. below are the string values String st1 'T09:39:14.000Z' String st2 'T09:45:44. You need to create a stream from the result of String.split: final List longs Arrays. The atoi() function converts a character string to an integer value.You will still need longs to be able to implement that, because 9-digit numbers can exceed the range of an int. Convert timestamp string to long in java Ask Question Asked 7 years, 11 months ago Modified 4 years, 4 months ago Viewed 61k times 9 I have to fetch time stamp from DB and retrieve only time and compare two time. Currently your code is somewhere between the two. If youre trying to declare a new variable, you should use: long timestamp. Its not really clear what youre trying to do - if youre trying to populate a single element of an existing array, you should use: Timestamp1i. (BigInteger.valueOf(98).subtract(new BigInteger(val).mod(BigInteger.valueOf(97)))) Īlternatively you can check the IBAN Documentation (it's german but that shouldn't be problem for you I suppose -) where in chapter 4 there is a description of a way to calculate the checksum if you're limited (like here). This isnt valid Java: Long Timestamp1i // anything. This method is best, so you should do the following: Use Long.parseLong () as it returns a long primitive, not a wrapper. String val = String.valueOf(BLZ) + String.valueOf(KNr) + landCode + "00" Cameron McKenzie TechTarget Convert a String to long in Java The correct way to convert a String to long in Java is to use the parseLong (String x) method of the Long wrapper class. You can do that by using : (Long.MAX_VALUE) In the comments of your question there is the theory that you want to calculate the checksum of an IBAN. The number you try to parse in is bigger than a long can handle.Įdit: You asked how to solve your problem. (String.valueOf(BLZ) + String.valueOf(KNr) + landCode + "00") There are many methods for converting a String to a Long data type in Java which are as follows: Using the parseLong () method of the Long class.
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