XML : Java - XML Parsing

I am parsing an XML in Java to check for a certain attribute. The attribute I am searching for is ERG. My code is not working.

  import java.io.File;  import javax.xml.parsers.DocumentBuilderFactory;  import javax.xml.parsers.DocumentBuilder;  import org.w3c.dom.Document;  import org.w3c.dom.NodeList;  import org.w3c.dom.Node;  import org.w3c.dom.Element;    public class Parser {    public static void main(String[] args){      try {        File inputFile = new File("parser.txt");       DocumentBuilderFactory dbFactory           = DocumentBuilderFactory.newInstance();       DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();       Document doc = dBuilder.parse(inputFile);       doc.getDocumentElement().normalize();       System.out.println("Root element :"           + doc.getDocumentElement().getNodeName());       NodeList nList = doc.getElementsByTagName("database");       for (int temp = 0; temp < nList.getLength(); temp++) {          Node nNode = nList.item(temp);          if (nNode.getNodeType() == Node.ELEMENT_NODE) {             Element eElement = (Element) nNode;             String nodeAttribute = eElement.getAttribute("key");             if(nodeAttribute == "ERG"){                 System.out.println("YES");             }          }       }    } catch (Exception e) {       e.printStackTrace();        }     }  }    

Here is my parser.txt

  <?xml version="1.0"?>  <databases>  <database key='BC'     driver='com.micro'     url.local='456@we'     login='ses2adm'     password='12dr'      />  <database key='SGB'     driver='com.micro'     url.local='477@jj'     login='ses2adm'     password='12yh'    />    <database key='ERG'     driver='com.micro13'     url.local='2726@kk'     login='sdm123'     password='ghjhj'    />    <database key='MESH'     driver='com.micro'     url.local='hgh'     login='adgvnh33'     password='hghsj'    />    <database key='MESJ_EOM'     driver='com.micro'     url.local='jujj'     login='124hh'     password='sunn'    />    <database key='BSUJ'     driver='com.micro'     url.local='dkl12'     login='eh23'     password='fukll'    />    <database key='BSYH_EOM'     driver='com.micro'     url.local='skk'     login='3556'     password='eyii'    />  </databases>