asked on

Output values from Arrays of Objects

Ok..

I have Email objects,
Email[] arrays of Email objects.

What I need to do is add all the Email objects in an ArrayList and convert the ArrayList to type Email[]
I need to do that for now for a later condition.

Now I want to get back the Email objects and test by printing out their values.

I tried the following but not working?
Any clue? (The SOP did work though)

Email lem;
Email[] lEmailRecords;

ArrayList lDataArrayList;

String lDataLine = null;
BufferedReader mDataFileReader;

      public void read(){
            try{
             mDataFileReader = new BufferedReader(new FileReader("C:/Projects/Feedback2.txt"));
             lDataArrayList = new ArrayList();
             while((lDataLine = mDataFileReader.readLine())!= null){

                   lem = new Email(lDataLine);

                   System.out.println(" " + "In read()" + lem); // this worked

                   lDataArrayList.add(lem);

                  lEmailRecords = new Email[lDataArrayList.size()];
                  lEmailRecords = ( Email[] ) lDataArrayList.toArray(lEmailRecords);
}
catch(Exception e){}
}

public void print(){
            for (int i = 0; i < lEmailRecords.length; i++){
                  System.out.println(" " + lEmailRecords[i].getEmailAddress()); //this did not work ???
                  System.out.println(" " + "In print()");


            }


      }

What's wrong???

Thanks
_Esam.

SOLUTION

CEHJ

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_Esam

ASKER

This>>

for (int i = 0; i < lEmailRecords.length; i++){
System.out.println(" " + lEmailRecords[i].getEmailAddress()); //this did not work ???
System.out.println(" " + "In print()");

}

Did not print in the print() method...
But if I move it in the read() , it does print...

Is there a scope problem here...Could you explain..??

Thanks.
_Esam

_Esam

ASKER

Anyway,

What I need to do is set the objects to a method of a class that takes an array of objects:
Like so:

public class EmailMessageContainer{

publice void setMessages(Object[] mEmailObjects){}

publice Object[] getMessages(){}

}

Now, I want set the objects as:

EmailMessageContainer emc = new EmailMessageContainer();

emc.setMessages(lEmailRecords)

Now, on the other side,

I want to get the objects and cast it to proper type as:

messages = (Email[])pDataContent.getMessages() // this should return the Email objects

Hope I am clear...

I want to make sure what's wrong in my first post...so that I can move along with the second class...

Thanks

_Esam

CEHJ

When and where are you calling print?

_Esam

ASKER

In the main() --

public static void main(String[] args) {

            // TODO Auto-generated method stub
            EmailMain lEmainMain = new EmailMain();
            System.out.println(" " + "What's going on");
            lEmainMain.read();
            lEmainMain.print();

      }

??

_Esam

CEHJ

>>lem = new Email(lDataLine);

may not be initializing the members correctly

_Esam

ASKER

>>lem = new Email(lDataLine);

may not be initializing the members correctly

Oh...No...

This is what I have:

public Email(){
      initializeObject();
}

public Email(String pDataLine)
{
this();
      buildObject(pDataLine);

}

/**
* <p>.</p>
*/
private void initializeObject()
{

mEmailAddress = null;
mRecordTypeCode = null;
mSubCode = null;
mEmailAddressNew = null;
mDateTime = null;

} // method initializeObject

private void buildObject(String pDataLine){

      pDataLine = pDataLine.trim();
      mEmailAddress =
            pDataLine.substring
(fEmailAddress_Start,
fEmailAddress_End).trim();
mRecordTypeCode =
      pDataLine.substring
(fRecordTypeCode_Start,
fRecordTypeCode_End).trim();
mSubCode =
      pDataLine.substring
(fSubCode_Start,
fSubCode_End).trim();
mEmailAddressNew =
      pDataLine.substring
(fEmailAddressNew_Start,
fEmailAddressNew_End).trim();
mDateTime =
      pDataLine.substring
(fDateTime_Start,
fDateTime_End).trim();


}

Thanks..
_Esam

CEHJ

How is your getEmailAddress() method defined?

_Esam

ASKER

Like so:

public String getEmailAddress()
{
return mEmailAddress;
}

In the Email class.

_Esam

_Esam

ASKER

Well CEHJ,

I do get the email address with getEmailAddress if I try it in the read() method?

Doesn't work in the print method???

_Esam

_Esam

ASKER

Well, I will check the email in Half an hour again..
Please do drop a line...

Thanks..
_Esam

_Esam

ASKER

I guess CEHJ is gone for the day :)
I will check tomorrow then...

_Esam

_Esam

ASKER

Hi CEHJ,

I guess it was a scope problem...
Once I moved the ArrayList creation at the top, it did work...

Here is what I did:
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Iterator;

import com.aa.ed.cecevfeed.data.Email;
// com.aa.ed.cecevfeed.data.EmailBehavior;

public class EmailMain {
      Email lem;
      ArrayList lDataArrayList = new ArrayList();;
      BufferedReader mDataFileReader;
      String lDataLine = null;
      Email[] lEmailRecords;

      public void read(){
            try{
             mDataFileReader =
new BufferedReader(new FileReader("C:/Projects/Feedback.txt"));
             while((lDataLine = mDataFileReader.readLine()) != null){
                   lem = new Email(lDataLine);
                   lDataArrayList.add(lem);
                   lEmailRecords = new Email[lDataArrayList.size()];
                   lEmailRecords = (Email[]) lDataArrayList.toArray(lEmailRecords);
                   System.out.println(" " + lem);

             };


            }
            catch (Exception e){

            }
      }


      public void print(){
            for (int i = 0; i < lEmailRecords.length; i++){
                  System.out.println(" " + lEmailRecords[i].getEmailAddress());


            }


      }

      /**
       * @param args
       */
      public static void main(String[] args) {

            // TODO Auto-generated method stub
            EmailMain lEmainMain = new EmailMain();
            lEmainMain.read();
            lEmainMain.print();

      }

}

And I got the output as I wanted:

The values in Email object are: a@a.com08007b@b.com*

The values in Email object are: a@a.com08007b@b.com*

The values in Email object are: a@a.com08007b@b.com*

The values in Email object are: a@a.com08007b@b.com*

The values in Email object are: a@a.com08007b@b.com*

a@a.com
a@a.com
a@a.com
a@a.com
a@a.com

Let me know what you think..

Thanks.
_Esam

ASKER CERTIFIED SOLUTION

Mayank S

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CEHJ

>>I guess CEHJ is gone for the day :)

Sorry - i should have warned you ;-)

_Esam

ASKER

Yes mayankeagle,

You did mention that... but I guess I overlooked..:)

Thanks.. both...

_Esam...