Re: String getTagValue(Document doc, String tag)

From:
 Daniel Pitts <googlegroupie@coloraura.com>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 25 Sep 2007 15:51:49 -0000
Message-ID:
<1190735509.911480.36090@y42g2000hsy.googlegroups.com>
On Sep 25, 6:39 am, gert <gert.cuyk...@gmail.com> wrote:

I am used to work with javascript, where you can do things like

"v=doc.getElementsByTagName('test')[0].childNodes[0].nodeValue".

I am trying to do the same in java like this but i think l2=(NodeList)
l1.item(t); is not the same as childNodes or is it ?

This is terrible code. I can hardly follow it at all.

protected String getTag(Document doc, String tag)
{
        String v = null;

Don't initialize strings to null. Also, if you're building up a
string, you should use a StringBuilder.

        NodeList l1,l2 = null;

You would be better off declaring objects where you initialize them.

        Node n = null;
        Integer t,t_,c,c_ = null;

NONE of these variable names make an sense! Use meaningful names!

        l1=doc.getElementsByTagName(tag);
        t_=doc.getElementsByTagName(tag).getLength();
        for(t=0;t<t_;t++)
        {
            l2=(NodeList) l1.item(t);
            c_=l2.getLength();
            for(c=0;c<c_;c++)
            {
                n=l2.item(c);
                v=v+ n.getNodeValue();
            }
        }
        return v;

}


Also, if you're translating the javascript into java, you have added
WAY too much.

What you wrote in javascript:

"v=doc.getElementsByTagName('test')[0].childNodes[0].nodeValue".

what you want in java:
protected String getTag(Document doc, String tagname) {
   return
doc.getElementsByTagName(tagname).item(0).getChildNodes().item(0).getNodeValue();
}

There aren't any loops in the js, so why should there be in the java?

Hope this helps.

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