Dynamic variable declaration in Java

Question

Here I need to create a XML for soap request. It may have multiple userid tags like below.

<userid>123</userid>
<userid>456</userid>
...

Below is my code to add that tags into XML.

SOAPElement userid1 = example.addChildElement("userid");
SOAPElement userid2 = example.addChildElement("userid");
userid1.addTextNode("123");
userid2.addTextNode("456");

The above code works for two userids but not more then that so below is the java code to add tags and values to XML.

for(int i = 0; i < userids.length; i++){
    SOAPElement userid+i = example.addChildElement("userid");
    userid+i.addTextNode(userids[i]);
}

Here the issue is SOAPElement userid+i = example.addChildElement("userid"); is not working.

you can't change a variables name dynamically. What you can do is use an array or arrayList — Uma Kanth
– Uma Kanth, Commented Aug 27, 2015 at 12:16
possible duplicate of Assigning variables with dynamic names in Java — Andreas Fester
– Andreas Fester, Commented Aug 27, 2015 at 12:17
possible duplicate of How to create variables dynamically in Java? — Andreas Fester
– Andreas Fester, Commented Aug 27, 2015 at 12:18
Maybe because if you google this question title the first link is to a duplicate of this question where OP could get the answer. Maybe because OP has shown 0 effort to solve the problem. Maybe because of the extremely detailed problem statement of "[this line of code] is not working" I'm trying to figure out why there was ever an upvote. — takendarkk
– takendarkk, Commented Aug 27, 2015 at 12:19

user1933888 · Accepted Answer · 2015-08-27 12:41:54Z

4

SOAPElement[] userid = new SOAPElement[userids.length]
for(int i=0; i<userids.length; i++){
        userid[i] = example.addChildElement("userid");
        userid[i].addTextNode(userids[i]);
    }

'userid+i' is not an acceptable java variable name (identifier) so you must be getting a compile time error like i cannot be resolved to a variable.

Better approach is to use an array of values, you can use an array of SOAPElement objects as I have listed above or other (Like List) Implementations of java Collections

1 Comment

user3634904 Over a year ago

Tried, for loop first line is saying, Can not covert SOAPElement to SOAPElement[].

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