String to Date with month all lowercase in java

问题

I have a string that contains a date, in the following format:

dd-mm-yyyy

with the month that is all lowercased. For example: 25-aug-2019 Now i tried to use SimpleDateFormat to convert my string to a Date, but i have the following exception:

java.text.ParseException: Unparseable date: "25-aug-2019"
    at java.text.DateFormat.parse(Unknown Source)
    at org.whoislibrary.servers.WhoisCom.parseResponse(WhoisCom.java:37)
    at org.whoislibrary.WhoisAbstract.executeQuery(WhoisAbstract.java:44)
    at org.whoislibrary.WhoisCommand.executeQuery(WhoisCommand.java:69)
    at org.whoislibrary.WhoisMain.main(WhoisMain.java:10)

This is the code that i used:

DateFormat df = new SimpleDateFormat("dd-MM-yyyy");
try {
        Date expDate = df.parse(dateString).trim());
    System.out.println(expDate.toString());
} catch (ParseException e) {
    e.printStackTrace();
}

I think the problem is that MM refers to month name that start with a capital letter (Aug, Jul etc). There is an option, or a class like SimpleDateFormat that help me to convert that string into a Date. or it must be done Manually?

回答1:

Well in your code you have:

new SimpleDateFormat("dd-MM-yyyy")

Which should be:

new SimpleDateFormat("dd-MMM-yyyy")

Since the month part in your string has 3 letters (MMM) and not 2 (MM)

回答2:

use dd-MMM-yyyy

回答3:

Your date "25-aug-2019" is in "dd-MMM-yyyy" format not "dd-MM-yyyy". So you get parse error. You should use "dd-MMM-yyyy" while creating SimpleDateFormat object.

回答4:

 DateFormat df = new SimpleDateFormat("dd-MMM-yyyy");
    try {
            Date expDate = df.parse("25-aug-2019");
        System.out.println(expDate.toString());
    } catch (ParseException e) {
        e.printStackTrace();
    }

回答5:

Refer javaDocs java.text.SimpleDateFormat

来源：https://stackoverflow.com/questions/8907659/string-to-date-with-month-all-lowercase-in-java

标签

java

date