Fix date formatter patterns and text block equivalence

[Copilot]

Reddit feedback identified two code correctness issues: incorrect ISO-8601 date patterns and non-equivalent text block examples.

Changes

DateTimeFormatter pattern: yyyy-MM-dd → uuuu-MM-dd

DateTimeFormatter should use uuuu (proleptic year) for ISO-8601 compliance, not yyyy (year-of-era). SimpleDateFormat retains yyyy as it doesn't support uuuu.

Before:

DateTimeFormatter fmt = DateTimeFormatter.ofPattern("yyyy-MM-dd");

After:

DateTimeFormatter fmt = DateTimeFormatter.ofPattern("uuuu-MM-dd");

Files: date-formatting.html, java-time-basics.html, hex-format.html, duration-and-period.html, index.html, data/snippets.json

Text block closing delimiter placement

Text blocks had trailing newlines before """, making them non-equivalent to their concatenated counterparts.

Before (produces extra trailing newline):

String sql = """
    SELECT u.name
    ORDER BY u.name
    """;

After (equivalent output):

String sql = """
    SELECT u.name
    ORDER BY u.name""";

Files: text-blocks-for-multiline-strings.html, multiline-json-sql.html, data/snippets.json

Screenshots

Text Blocks Fix

Date Formatting Fix

Multiline SQL Fix

Original prompt

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This section details on the original issue you should resolve

<issue_title>Issues from reddit</issue_title>
<issue_description>1. Stream::toList mentionen twice. Not that it matters much in practice, but DateTimeFormatter.ofPattern("yyyy-MM-dd") should probably be DateTimeFormatter.ofPattern("uuuu-MM-dd").

2. The java code has flaws. For example, the code selections for multiline strings are not equivalent. I only checked a few of them.

Plus, the content is AI slop:

"Why the modern way wins: point one, point two, point three"

3. The one for Compact Source Files is wrong. It should be IO.println, not println.

4. Things like Files.newBufferedReader and default UTF-8 are also nice to mention.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Issues from reddit #13

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