ICU-22888 Enhance XML Processor Configuration for Tools Directory in ICU4J Package

[vignesh28s1995]

Enhance XML Processor Configuration for Tools Directory in ICU4J Package

Checklist

• Required: Issue filed: https://unicode-org.atlassian.net/browse/ICU-22888
• Required: The PR title must be prefixed with a JIRA Issue number. Example: "ICU-1234 Fix xyz"
• Required: The PR description must include the link to the Jira Issue, for example by completing the URL in the first checklist item
• Required: Each commit message must be prefixed with a JIRA Issue number. Example: "ICU-1234 Fix xyz"
• Issue accepted (done by Technical Committee after discussion)
• Tests included, if applicable
• API docs and/or User Guide docs changed or added, if applicable

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[mihnita]

Can you please wrap only this new configuration section in a try - catch block?

It is more consistent with what the rest of the method does (there are try blocks starting at lines 433 and 470).
And we don't end up with nested try blocks, and everything indented.

Something like this:

Before:

        DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();
        dfactory.setNamespaceAware(true);
        Document doc = null;

After:

        DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();

        try {
            // Set secure processing features to avoid XXE attacks
            dfactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
            dfactory.setNamespaceAware(true);

            // Disable access to external DTDs and entities to mitigate XXE attacks
            dfactory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
            dfactory.setFeature("http://xml.org/sax/features/external-general-entities", false);
            dfactory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
            dfactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
        } catch (ParserConfigurationException e) {
            System.err.println("ERROR: Parser configuration error: " + e.getMessage());
            System.exit(-1);
        }        

        Document doc = null;

Thank you,
Mihai