How to store values in an array (Java)

Question

I have a table (REQUESTS) and it contains 1 column (XML_DATA) for xmls.

So if ID=123 has a row in this table, it should get the corresponding xml.

If xml was retrieved, i need to get all the values with tag <Mobile>0918xxxx</Mobile>.

Here is what i have so far:

for (int i = 0; i < RqeuestsDBViewData.length; i++) //GETS ROWS FROM TABLE REQUESTS { xmlDetails = test.getDetailsFromXML(mCustUtils, RequestDBViewData[i]); //GETS XML FROM XML_DATA String strXmlDetails; String strMob; if (!AppUtils.isEmpty(xmlDetails)) //IF IT HAS ROW, THEN GET RECORD FROM <MOBILE></MOBILE> TAG { strXmlDetails = xmlDetails.toString(); //ENTIRE XML strMob = StringUtils.substringBetween(strXmlDetails, "<Mobile>", "</Mobile>"); //GETS MOBILE VALUE }

Now, if there are more than 1 <Mobile></Mobile>,

i need to store it in an array using for loop.

How do i store multiple values of strMob in an array?

After stroring all possible strMob, i'm planning to assign the values somewhere else like: personalInfo[j].setMobile(array/list[j]);

Any suggestions on how to do this?

Since you don't know how many elements you'll have, it is better that you use a List, rather than an array. You can later turn that list to an array using the toArray() method, if you need to. — Yoav Gur
– Yoav Gur, Commented Oct 9, 2018 at 10:58
hi @YoavGur, can you show how? because i'm also planning to use this array/list to do something like personalInfo[j].setMobile(array/list[j]); — dcdum2018
– dcdum2018, Commented Oct 9, 2018 at 11:01
That's pretty basic java stuff. Here are 2 links that I hope would help: 1. codejava.net/java-core/collections/… , 2. tutorials.jenkov.com/java-collections/list.html — Yoav Gur
– Yoav Gur, Commented Oct 9, 2018 at 11:11

jschnasse · Accepted Answer · 2018-10-09 12:52:21Z

Use a proper XML tool to read your XML.

Variant 1

Use Jackson to parse your XML to a prepared Java object. This will also work for arrays.

Variant 2

Read XML to a DOM object

public static Element getDocument(String xmlString) { return getDocument(new ByteArrayInputStream(xmlString.getBytes())); } public static Element getDocument(InputStream inputStream) { try { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder docBuilder = factory.newDocumentBuilder(); Document doc = docBuilder.parse(new BufferedInputStream(inputStream)); Element root = doc.getDocumentElement(); root.normalize(); return root; } catch (Exception e) { throw new RuntimeException(e); } }

With the aim of XPATH you can than extract your <Mobile> elements. See this answer: Extract content between XML tags

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