Develop Reference

java EE and cordova

I want to integrate quercus into cordova application, I've create simple test file like this:
import com.caucho.quercus.Quercus;
public class Test {
public static void main(String[] args) {
Quercus interpreter = new Quercus();
interpreter.execute("echo 'foo';");
}
}
but if fail to compile because it require java EE and I have only open jdk 8 installed when I use umake to install all that require to create android app for cordova.
Will I be able to run java EE on android? If yes what I need to install to compile java EE test application and cordova app?
Here is a list of classes that throw error when I run javac:
import javax.annotation.sql.DataSourceDefinition;
import javax.annotation.sql.DataSourceDefinitions;
import javax.cache.Cache;
import javax.ejb.EJB;
import javax.ejb.EJBs;
import javax.ejb.Stateful;
import javax.el.ELResolver;
import javax.el.ExpressionFactory;
import javax.enterprise.context.ContextNotActiveException;
import javax.enterprise.context.Conversation;
import javax.enterprise.context.ConversationScoped;
import javax.enterprise.context.Dependent;
import javax.enterprise.context.NormalScope;
import javax.enterprise.context.spi.Context;
import javax.enterprise.context.spi.Contextual;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.event.Event;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.Alternative;
import javax.enterprise.inject.AmbiguousResolutionException;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Disposes;
import javax.enterprise.inject.IllegalProductException;
import javax.enterprise.inject.InjectionException;
import javax.enterprise.inject.Instance;
import javax.enterprise.inject.New;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.Specializes;
import javax.enterprise.inject.spi.Annotated;
import javax.enterprise.inject.spi.AnnotatedField;
import javax.enterprise.inject.spi.AnnotatedMethod;
import javax.enterprise.inject.spi.AnnotatedParameter;
import javax.enterprise.inject.spi.AnnotatedType;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.Decorator;
import javax.enterprise.inject.spi.Extension;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.enterprise.inject.spi.InjectionTarget;
import javax.enterprise.inject.spi.InterceptionType;
import javax.enterprise.inject.spi.Interceptor;
import javax.enterprise.inject.spi.ObserverMethod;
import javax.enterprise.inject.spi.PassivationCapable;
import javax.enterprise.inject.spi.ProcessAnnotatedType;
import javax.enterprise.inject.spi.ProcessBean;
import javax.enterprise.inject.spi.ProcessInjectionTarget;
import javax.enterprise.inject.spi.ProcessProducer;
import javax.enterprise.inject.spi.Producer;
import javax.enterprise.inject.Stereotype;
import javax.enterprise.inject.UnsatisfiedResolutionException;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Provider;
import javax.inject.Qualifier;
import javax.inject.Scope;
import javax.interceptor.InterceptorBinding;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceUnit;

class Date in Java - cannot find symbol

With code:
String timeStamp = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss").format(new Date());
I get:
cannot find symbol
symbol : class Date
String timeStamp = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss").format(new Date());
Why?
My imports:
import java.awt.AWTException;
import java.awt.Robot;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.*;
import java.text.SimpleDateFormat;
import javax.imageio.ImageIO;

You're simply missing this:
import java.util.Date;

Add this import.
import java.util.Date;
It won't show any errors.
Java Doc: Date class documentation, (see link for extra info).

No suitable constructor found for XSSF Workbook

I have added all the jar files poi-ooxml,poi,domj4,xml beans but still its not supporting to read the xlsx file.i have imported all the things need to work with XSSf in java program.Dont know why its not supporting XSSf constructor.i have created xssf workbook for file and tried with opcpackage and inputsream but none of the constructorwas not worked.
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Iterator;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.ss.usermodel.DateUtil;
import org.postgresql.largeobject.LargeObject;
import org.postgresql.largeobject.LargeObjectManager;
import java.sql.PreparedStatement;
import javax.servlet.ServletContext;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
the above headers i have imported and i tried like
OPCPackage pkg = OPCPackage.open(relative);
XSSFWorkbook wb11 = new XSSFWorkbook(pkg);
Its showing error like no suitable constructor found.

Java can't read XML file

I need to read a XML file returned from a web service.
I was following this tutorial, and I have a error in this line:
Element firstPersonElement = (Element)firstPersonNode;
The error:
inconvertible types
required: javax.swing.text.html.parser.Element
found: org.w3c.dom.Node
What am I doing wrong?
Thanks in advance.
EDIT
My imports
import br.com.portaldeideias.model.ErroXML;
import br.com.portaldeideias.model.TributosNFe;
import java.io.StringReader;
import java.util.List;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.swing.text.html.parser.Element;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Source;
import javax.xml.transform.dom.DOMSource;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

You have wrong imports. Make sure imports are correct.
Remove import javax.swing.text.html.parser.Element
Make sure imports are:
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
As an extra check, Make sure node is type Element Node.
if (firstPersonNode.getNodeType() == Node.ELEMENT_NODE) {
Element eElement = (Element) firstPersonNode;
...................
}

javax.mail.Session constructor "is not visible"

This is almost the same as the Google App Engine code for JavaMail use. Link
It gives a Session constructor not visible error. The other imports seem fine so why is this happening to Session?
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.api.datastore.DatastoreService;
import com.google.appengine.api.datastore.DatastoreServiceFactory;
import java.util.Properties;
import javax.mail.Session;
import javax.mail.Message;
import javax.mail.Transport;
import javax.mail.MessagingException;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
Properties props = new Properties();
Session session = new Session(props, null);

Session has no public constructor; you need to use the static getInstance() or getDefaultInstance() methods. See javadoc.