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I need to validate the zip code in java. I have googled and there are many regular expressions.
The problem I have is the required zip code pattern may change from some admin settings page. Like at some instance, we may need users to enter zip code in format XXX – XXX or may be (XXXXXX) etc.
In some case zip code can consist of numbers only and in some cases alpha numeric.
Please help.
Unfortunately, there is no good localization support for postal addresses, including postal codes (aka zip codes). This blog post (about a year old, but still, unfortunately, relevant) describes the sorry state of postal address validation. In the U.S., the postal service offers their Address Validation API; a web-based protocol. The only other tool I know of is an Android library called libaddressinput. The project summary says that while the UI is Android-specific, the back end can be reused.