Update README.md

[pushpander1010]

Added explanation, programming example | Explanation for Half-Sync/Half-Async

Added a programmatic example and easy to understand explanation for Half-Sync/Half-Async design pattern.

For detailed contributing instructions see https://github.com/iluwatar/java-design-patterns/wiki/01.-How-to-contribute

[sonarqubecloud]

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[pushpander1010]

Please merge it

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[iluwatar]

Well written, but the explanation seems to be disconnected from the code example. I think that the explanation should be based on the actual code we have. Could you update accordingly?

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[stale]

Closed due to inactivity. Thank you for your contributions.

[iluwatar]

Looks good! Thank you for the contribution 🎉

@all-contributors please add @pushpander1010 for docs

[allcontributors]

@iluwatar

I couldn't determine any contributions to add, did you specify any contributions?
Please make sure to use valid contribution names.

I've put up a pull request to add @pushpander1010! 🎉

[sonarqubecloud]

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