Member Avatar for 1x4n

hi all i want to create an xml file from an array
i've been googling but can't find the right one
the closest one that i get is in
but it doesn't create an xml file like i wanted to
i want to print and create it like c:\xml file\data.xml

can anybody show me the code or any link that actually print like how i wanted?
any help would be appreciated, thanx :)

  • 2 Contributors
  • 6 Replies
  • 189 Views
  • 2 Days Discussion Span
  • Latest Post Latest Post by 1x4n

Dani AI

Generated

Short summary and practical options tied to the existing thread (for and following ): there are three common patterns to produce a file like "C:\xml file\data.xml" from an array. Choice depends on dataset size and whether the XML needs to be validated or memory-efficient.

A simple, fast approach for small-to-medium data: build the XML text and write it with a buffered writer (always pick an explicit charset and escape XML special chars). Example (try-with-resources, Java 7+):

private static String escapeXml(String s) {
    if (s == null) return "";
    return s.replace("&", "&")
            .replace("<", "&lt;")
            .replace(">", "&gt;")
            .replace("\"", "&quot;")
            .replace("'", "&apos;");
}

try (BufferedWriter out = new BufferedWriter(
       new OutputStreamWriter(new FileOutputStream("C:\\xml file\\data.xml"), "UTF-8"))) {
    out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
    out.write("<data>\n");
    for (String[] item : items) {
        out.write("  <item>\n");
        out.write("    <id>" + escapeXml(item[0]) + "</id>\n");
        out.write("    <name>" + escapeXml(item[1]) + "</name>\n");
        out.write("  </item>\n");
    }
    out.write("</data>\n");
}

Notes on writers: BufferedWriter gives buffering and raw IOException behavior. PrintWriter is convenient but swallows IOExceptions (checkPrintWriter.checkError()), so combine them if convenience is needed (wrap a BufferedWriter with a PrintWriter).

When validation or richer construction is required, build a DOM and write with Transformer (good for small trees). For very large datasets, prefer a streaming API (StAX / XMLStreamWriter) so memory usage stays low and generation is fast.

On performance and reading from PHP (follow-up from ): measure rather than guess — suggested timing; use System.nanoTime() for higher resolution. For repeated/complex queries, a database is best; for simple one-off dumps CSV is fastest to parse, JSON is lighter than XML, and XML trades parsing overhead for self-describing structure.

Recommended Answers

All 6 Replies

Member Avatar for NormR1

hat actually print like how i wanted?

Can you explain "how I wanted"?

The site at your link has code to generate Strings of XML and print them on the screen.
Have you tried replacing the 'print to screen' method calls with classes and methods that will write the Strings to a file?

Member Avatar for 1x4n

sorry if my explanation not clear
it's just a simple xml like

<?xml version="1.0"?>
<data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<item>
    <id></id>
    <name></name>
</item>
<item>
    etc
</item>
</data>

and yes what i need is how to write string into file that is xml :)
any references while i keep looking and trying?

Edited by 1x4n because: n/a
Member Avatar for NormR1

how to write string into file

There are plenty of examples of how to do that.
Try Searching for PrintWriter for sample codes that write Strings to files.

Member Avatar for 1x4n

thanx a lot NormR1 i've got the solution
may i ask again?
which one is faster for writing strings to file
is it using bufferedWriter or PrintWriter?
or there is another method coz i only found this two solution

i want to parse a large dataset which i process from java into php for presentation
which one is faster to read
is it from text, xml, or database?

sorry if i was asking too much and out of topic because i'm a newbie
i've only tried it on a small dataset and can't see the differences...

Edited by 1x4n because: n/a
Member Avatar for NormR1

which one is faster

Don't worry about it yet.
If your really interested write some test programs and time them using the System.currentTimeMillis() method at start and end of job.

Member Avatar for 1x4n

thanx you are a great help NormR1
i wonder when are u sleeping coz your answer is really fast :)
GBU

Edited by 1x4n because: n/a
Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.