[gmatossian]

The Java sorting references did not show how to provide a comparator for an extracted property, leaving case-insensitive object sorting hard to recover. This adds concise examples and makes the extractor/comparator distinction explicit.

Changes

• add direct-string and object-property case-insensitive sorting examples;
• show domain-specific tie-breaking with thenComparing(...); and
• compare the one- and two-argument Comparator.comparing(...) forms and label the what versus how decisions.

Verification

• compiled the examples with Temurin Java 21 using javac --release 21;
• npm run check passed (the existing initial-bundle budget warning remains); and
• reviewed both rendered topics at the wide layout and at a 430 px viewport.

Review

• reviewed the complete final diff with no blocking findings or verification gaps;
• no independent review was used for this small, familiar content change; and
• AI-assisted contribution: Codex authored the bounded content update, ran verification, and performed the rendered and final-diff reviews.

Closes #119