Clarify realpath vs readlink fallback logic in Java integration script

[Copilot]

Addressed review question about the difference between the current realpath/readlink fallback implementation and the suggested alternative approach.

Context

The script verifies symbolic links by comparing resolved paths. Lines 78-86 implement a fallback pattern:

# Current implementation
REAL_LINK_TARGET=$(realpath "$TARGET_DIR/Contents" 2>/dev/null)
EXPECTED_TARGET=$(realpath "$JAVA_INSTALL_PATH/Contents" 2>/dev/null)

if [ -z "$REAL_LINK_TARGET" ] || [ -z "$EXPECTED_TARGET" ]; then
    REAL_LINK_TARGET=$(readlink "$TARGET_DIR/Contents")
    EXPECTED_TARGET="$JAVA_INSTALL_PATH/Contents"
fi

Response

Both the current implementation and the suggested command -v realpath check achieve the same result:

• Current: Attempts realpath, suppresses errors via 2>/dev/null, falls back on empty output
• Suggested: Checks for realpath existence first, then attempts it

The current approach is sufficient because error suppression handles both "command not found" and "command failed" cases. The explicit availability check adds verbosity without functional benefit in this context.

No code changes required—current implementation is correct.

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