I have a question about import statements

**syedk01** · August 26th, 2013, 01:37 PM

My compile gives error

--- Update ---

javac Scoring.java

Scoring.java:37: error: '.' expected
import ScoringRequest;
^
Scoring.java:37: error: ';' expected
import ScoringRequest;
^
Scoring.java:38: error: class, interface, or enum expected
import ScoringResponse;
^
3 errors

package Scoring;
 
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StringWriter;
 
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import ScoringRequest;
import ScoringResponse;
 
@WebServlet( name="Scoring", displayName="Scoring Servlet", urlPatterns = {"/Scoring"}, loadOnStartup=1)
public class Scoring extends HttpServlet {
 
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		BufferedReader reader = null;
		BufferedWriter writer = null;
		ScoringRequest req = null;
 
		try {
			reader = new BufferedReader(new InputStreamReader(
					request.getInputStream()));
 
			StringBuffer xml = new StringBuffer();
			String line = reader.readLine();
			while (line != null) {
				xml.append(line);
				line = reader.readLine();
			}
 
			req = new ScoringRequest(xml.toString(), null, null,
					null);
 
			ScoringResponse res = (new ScoringEngine()).score(req);
 
			writer = new BufferedWriter(new OutputStreamWriter(
					response.getOutputStream()));
			writer.write(res.toXML());
			writer.flush();
 
		} catch (Exception ex) {
			System.err.println(ex);
 
			ScoringResponse res = new ScoringResponse(req.getModelName(), req.getPmmlURL(), req.getCsvInputRows(), null);
			StringWriter errWriter = new StringWriter();
			ex.printStackTrace(new PrintWriter(errWriter));
			res.setErrorMessage(errWriter.toString());
//			res.setErrorMessage(ex.getMessage());
 
			writer = new BufferedWriter(new OutputStreamWriter(
					response.getOutputStream()));
			writer.write(res.toXML());
			writer.flush();
 
		} finally {
			try {
				if (reader != null)
					reader.close();
			} catch (Exception ex) {
			}
 
			try {
				if (writer != null)
					writer.close();
			} catch (Exception ex) {
			}
 
		}
	}
}

**KevinWorkman** · August 26th, 2013, 01:44 PM

I don't think you can import from the default package like that. Those classes need to be in a package if you want to use them in a class in a different package.

**syedk01** · August 26th, 2013, 02:40 PM

Thanks for your quick response.
I have the code in the same directory as in ScoringRequest.class and ScoringResponse.class. How would I go about putting them in a package so I can import them?

**syedbhai** · August 26th, 2013, 04:11 PM

Hello.
Try this please,
import Scoring.ScoringRequest;
import Scoring.ScoringResponse;

Let us know if the problem still persists.

Syed.

**syedk01** · August 26th, 2013, 05:15 PM

Hello Syed
I get the following errors. I do have the "source" to ScoringRequest.java" and "ScoringResponse.java". Do you think I need to "build" a "Scoring" package?

syedk@syedk-ThinkPad-T410:~/PAC/CODE$ javac ScoringRequest.java ScoringRequest.java:26: error: package org.jdom2 does not exist
import org.jdom2.CDATA;
^
ScoringRequest.java:27: error: package org.jdom2 does not exist
import org.jdom2.Document;
^
ScoringRequest.java:28: error: package org.jdom2 does not exist
import org.jdom2.Element;
^
ScoringRequest.java:29: error: package org.jdom2 does not exist
import org.jdom2.JDOMException;
^
ScoringRequest.java:30: error: package org.jdom2.input does not exist
import org.jdom2.input.SAXBuilder;
^
ScoringRequest.java:31: error: package org.jdom2.output does not exist
import org.jdom2.output.XMLOutputter;
^
ScoringRequest.java:51: error: cannot find symbol
public ScoringRequest(String xml, String endPointURL, String userID, String password) throws JDOMException, IOException {
^
symbol: class JDOMException
location: class ScoringRequest
ScoringRequest.java:56: error: cannot find symbol
SAXBuilder builder = new SAXBuilder();
^
symbol: class SAXBuilder
location: class ScoringRequest
ScoringRequest.java:56: error: cannot find symbol
SAXBuilder builder = new SAXBuilder();
^
symbol: class SAXBuilder
location: class ScoringRequest
ScoringRequest.java:57: error: cannot find symbol
Document doc = builder.build(new StringReader(xml));
^
symbol: class Document
location: class ScoringRequest
ScoringRequest.java:139: error: cannot find symbol
Element root = new Element("scoring_request");
^
symbol: class Element
location: class ScoringRequest
ScoringRequest.java:139: error: cannot find symbol
Element root = new Element("scoring_request");
^
symbol: class Element
location: class ScoringRequest
ScoringRequest.java:140: error: cannot find symbol
root.addContent(new Element("pmml_url").addContent(pmmlURL));
^
symbol: class Element
location: class ScoringRequest
ScoringRequest.java:141: error: cannot find symbol
root.addContent(new Element("model_name").addContent(modelName));
^
symbol: class Element
location: class ScoringRequest
ScoringRequest.java:142: error: cannot find symbol
root.addContent(new Element("csv_input_rows").addContent(new CDATA(csvInputRows)));
^
symbol: class CDATA
location: class ScoringRequest
ScoringRequest.java:142: error: cannot find symbol
root.addContent(new Element("csv_input_rows").addContent(new CDATA(csvInputRows)));
^
symbol: class Element
location: class ScoringRequest
ScoringRequest.java:144: error: cannot find symbol
XMLOutputter serializer = new XMLOutputter();
^
symbol: class XMLOutputter
location: class ScoringRequest
ScoringRequest.java:144: error: cannot find symbol
XMLOutputter serializer = new XMLOutputter();
^
symbol: class XMLOutputter
location: class ScoringRequest
ScoringRequest.java:146: error: cannot find symbol
return serializer.outputString(new Document(root));
^
symbol: class Document
location: class ScoringRequest

Thanks

Syed

**syedbhai** · August 27th, 2013, 12:25 AM

Hi.
I feel like you didn't add the necessary JAR files.
Are you using any IDE? If so then please add the required JAR files to your project.
If you working on command prompt then set the CLASSPATH variable to point to the required JARS.

Syed.

**syedk01** · August 27th, 2013, 06:22 AM

Originally Posted by syedbhai

Hi.
I feel like you didn't add the necessary JAR files.
Are you using any IDE? If so then please add the required JAR files to your project.
If you working on command prompt then set the CLASSPATH variable to point to the required JARS.

Syed.

Hello Syedbhai
I added the jar files to the directory I am compiling in. I get the same error. I am not using IDE. Since the all the files (CLASS, JAVA and JAR_ are in the same directory - I assume I do not need the classpath command. However, I try with the classpath command but got the same error.
Regards
Syed

**KevinWorkman** · August 27th, 2013, 07:28 AM

Originally Posted by syedk01

Thanks for your quick response.
I have the code in the same directory as in ScoringRequest.class and ScoringResponse.class. How would I go about putting them in a package so I can import them?

If the classes are all in the same package, you don't have to import them.

**syedbhai** · August 27th, 2013, 07:47 AM

Hello.
If you working with the command prompt then you need to first set the CLASSPATH.
And then you need to compile cleverly so that packages get generated appropriately.
Syed.

--- Update ---

And I dont' believe everything (java files, class files) is in the same directory.
Because you have package statement in your source code.

Syed.

Thread: I have a question about import statements

LinkBack

Thread Tools

Display

I have a question about import statements

Related threads:

Re: I have a question about import statements

The Following User Says Thank You to KevinWorkman For This Useful Post:

Re: I have a question about import statements

Re: I have a question about import statements

Re: I have a question about import statements

Re: I have a question about import statements

Re: I have a question about import statements

Re: I have a question about import statements

Re: I have a question about import statements

Similar Threads

[SOLVED] Which is more efficient? "import java.package.subpackage" or "import java.package.*"

Import if Import is Found, Else

"The import ___ cannot be resolved" (stupid noob question)

import question

[SOLVED] Do i need to import anything here?