Java-quickstart guide have setup issues

[dqtran91]

Issue building on Windows 11.

./gradlew build gives Could not find method compile() for arguments because compile is no longer supported for Gradle 7.4.2 and up. Using implementation will fix this.

The DateTimeTest.java also uses an incorrect BigDecimal attribute BigDecimal .TWO which gives an error while building.

[JPercival]

Hi @dqtran91! Give this PR a shot:
#1302

Should have that reviewed and merged shortly.

[dqtran91]

@JPercival thank you for looking into it! This also failed in DateTimeTest.java

Mac as well as Windows.

This fix works for me:
dateTime2 = new DateTime(BigDecimal.ONE.add(BigDecimal.ONE), 2020);

Also, how does one contribute via PRs?