Add useful isValidHashtag() for java

[johnlinp]

Problem

The functions like isValidHashtag() in js and valid_hashtag() in ruby are useful, but there is no such function for java.

Solution

Add isValidHashtag() in Validator.java and add test cases in ValidatorTest.java.

Result

Java people can easily check if a text is a valid hashtag via isValidHashtag().

[CLAassistant]

All committers have signed the CLA.

[andypiper]

Passing to @leeaustinadams for review - thanks for the PR!

[johnlinp]

Hi @leeaustinadams Any updates on this PR? Thanks!

[leeaustinadams]

Slowly orbiting back around to looking at twitter-text, will get you an update shortly.

[leeaustinadams]

lgtm other than that one item (required for our internal lint rules)

[johnlinp]

Hi @leeaustinadams I removed the redundant import line. Please take a look. Thank you.

[leeaustinadams]

Thanks! For this repo we need to merge it internally first and then push it back to github. Once that has happened I will close this pull request but you will be attributed in the commit message.

[johnlinp]

Hi @leeaustinadams Is there any updates on this PR?

[leeaustinadams]

I'm trying to find a time to distribute this internally as well since we need to do that in order to accept your change and push it back to GitHub. Thank you for your patience.

[johnlinp]

Hi @leeaustinadams and @andypiper,

I've signed the CLA, but the above check still shows "license/cla Pending — Contributor License Agreement is not signed yet." Do you have any idea why? Thanks.

[andypiper]

I assume this repository is no longer maintained - I'm unable to help here.