accessing numerical attribute values 2004-02-05 - By John A. Mitchell
I am a so-called newbie at this -- here goes.
I am trying to exract the value "double startTime" from the xml below.
I have an "Element" but don't know
how to "decode" or "transcode" the attribute value into a "double"
<timeBlock>
<startTime value="0.336"/>
<timeIncrement value=".0003"/>
</timeBlock>
double getStarTimet(Element e){
String startTime = new String("startTime");
String value = e.getAttribute(startTime);
double value = ????
return value;
}
Also, when I print "value"; say like "System.out.println(value)" I get
an empty string?
Can someone point me in the right direction here?
Here is the c++ that I have effectively used in the past (but now I need
the Java):
double Jpp_ParsedValues::getDoubleAttribute(DOMElement* e, const char*
name){
// This function retrieves the value of the attribute "name" on the
element
const XMLCh* start = XMLString::transcode(name);
const XMLCh* c = e->getAttribute( start );
delete start;
char* s = XMLString::transcode(c);
double value = atof(s);
delete s;
return value;
}
Now I need to do this in "Java" using xerces-j
I don't know where to look to figure this out.
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