How do u pass an object into a method

I want to create a method getData that takes an object of type Helper and returns an object of the same type.
how do u pass objects into a method and how do u get objects as returns im a bit confused

That will just allow you to pass a parameter. If you want to return a helper object
Helper paramHelper = new Helper();
Helper someHelper = callMethod(paramHelper);
public Helper callMethod(Helper hobj) {
    //<some code>
    Helper retHelper = new Helper();
    //<blah, blah>
    return retHelper;

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How can I pass a value into a page fragment?

How can I pass a value into a page fragment?
I am implementing four search screens. And the only thing different about them will be their backing bean.
So I’d like to do something like have four pages, each which retrieves its appropriate backing bean, sets that bean to a variable, and then includes a page fragment which contains the generic search page code (which will make use of that variable).
The code in the four pages would be something like this:
<?xml version='1.0' encoding='windows-1252'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<jsp:directive.page contentType="text/html;charset=windows-1252"/>
<c:set var="searchPageBackingBean"
value="#{pageFlowScope.employeeSearchPageBean}"
scope="page"/>
<jsp:include page="./SearchPageBody.jsff"/>
</jsp:root>
At this point, what I’m seeing is that the fragment page, SearchPageBody.jsff, has no visibility of the searchPageBackingBean variable, either referencing it as #{pageFlowScope.searchPageBackingBean} or just #{searchPageBackingBean}

The following will work, assuming you are needing to access a managed bean:
Put this in the parent page:
<c:set var="nameOfSearchPageBackingBean"
value="employeeSearchPageBean"
scope="request"/>
Put this in the child, SearchPageBody.jsff:
<c:set var="searchPageBean"
value="#{pageFlowScope[nameOfSearchPageBackingBean]}"
scope="page"/>

How to call a java method so I can pass a file into the method

I want to pass a file into a java method method from the main method. Can anyone give me some help as to how I pass the file into the method - do I pass the file name ? are there any special points I need to put in the methods signature etc ?
FileReader file = new FileReader("Scores");
BufferedReader infile = new BufferedReader(file);
Where am I supposed to put the above text - in the main method or the one I want to pass the file into to?
Thanks

It's a matter of personal preference really. I would encapsulate all of the file-parsing logic in a separate class that implements an interface so that if in the future you want to start taking the integers from another source, e.g. a db, you wouldn't need to drastically alter your main application code. Probably something like this, (with an assumption that the numbers are delimited by a comma and a realisation that my file-handling routine sucks):
public class MyApp{
public static void main(String[] args){
IntegerGather g = new FileIntegerGatherer();
Integer[] result = g.getIntegers(args[0]);
public interface IntegerGatherer{
public Integer[] getIntegers(String location);
import java.io.*;
public class FileIntegerGatherer implements IntegerGatherer{
public Integer[] getIntegers(String location){
FileInputStream fs=null;
try{
File f = new File(location);
fs = new FileInputStream(f);
byte[] in = new byte[1024];
StringBuffer sb = new StringBuffer();
while((fs.read(in))!=-1){
sb.append(new String(in));
StringTokenizer st = new StringTokenizer(sb.toString(),",");
Integer[] result = new Integer[st.countTokens()];
int count = 0;
while(st.hasMoreTokens()){
result[count]=Integer.valueOf(st.nextToken());
count++;
catch(IOException e){
//something sensible here
finally{
if(fs!=null){
try{
fs.close();
catch(IOException f){
return result;
Once compiled you could invoke it as java MyApp c:\myInts.txt
Sorry if there are typos in there, I don't have an ide open ;->

How can I pass an object to a function by value?

Hi
I have a function with an argument. this argument is an object. I don't want to alter this object. But java passes this object by reference and some fields in this object are altered after function return.
How can I pass this object by value and keep my original data unbroken?
thanks for any help

a.toraby wrote:
I have a function with an argument. this argument is an object. I don't want to alter this object. But java passes this object by reference and some fields in this object are altered after function return.
How can I pass this object by value and keep my original data unbroken?How you approach it is likely to depend on how much control you have over the code in question. If it's legacy code and has been badly designed, there's probably very little you can do to protect existing code short of a complete refactoring.
What you could do as an interim measure is:
1. Create an immutable wrapper to your existing mutable class.
2. Create new methods that replicate the existing ones, but take the immutable class instead.
3. Deprecate the old methods.
This won't break client code, but they will now get warnings when they compile and you can add documentation to point them to the new class/methods.
If you are in control of the code (especially if you're still in the design stages), you've got several options:
1. As Dr.Clap says, make your class immutable (probably best).
2. If this isn't possible, create mutable and immutable variants of your class. This is often best achieved by hanging them both from an interface.
Winston

How i can pass the value into 1 line

Hi expert,
how do i pass all the value for sales document flow item in one line?
i'm using this function
CALL FUNCTION 'RV_ORDER_FLOW_INFORMATION'
    EXPORTING
      aufbereitung = '2'
      belegtyp      = i_del-vbtyp
      comwa         = l_comwa
      nachfolger    = ' '
      vorgaenger    = 'X'
      v_stufen      = '50'
    TABLES
      vbfa_tab      = lt_vbfa
    EXCEPTIONS
      no_vbfa       = 1
      no_vbuk_found = 2
      OTHERS        = 3.
so now lt_vbfa already got data line by line....
line 1 : contract : 00010 : 1000000 : 19,000.00
line 2 : order     : 00010 : 2000000 : 10000.00
line 3 : delivery : 00010 : 3000000 : 10000.00
how i can pass the value into 1 line?
for example :
contract | line     | amount     | Order     | line     | amount    | delivery   | line     | amount     |
1000000 | 00010| 19,000.00 | 2000000 |00010 | 10000.00 | 3000000 | 00010 | 10000.00 |
Edited by: anuar jusoh on Aug 17, 2009 4:02 AM

Hi,
What is requirement for passing the data in a single line ? Do you finally need to append the same in the internal table and pass it in the module ?
You can create an internal table of type 1000 character and can loop the existing internal table. Then you can append the Work area in a single line and can finally append it to the table.
DATA : ITAB type standard table of char1000.
Loop at <existing table>.
concatenate table work area wa_char100 into Itab_char_1000.
endloop.
APPEND itab_char_1000 into itab.
Hope this helps.
Thanks,
Samantak.

How to convert a Graphics object into a JPG image?

I have this simple question about how to make a Graphics object into a JPG file...
I just need the names of the classes or the packages ... I'll figure out the rest of the details...
Thanks...

Anyway this might come in handy
JPEGUtils.java
============
* Created on Jun 22, 2005 by @author Tom Jacobs
package tjacobs.jpeg;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
* Utilities for saving JPEGs and GIFs
public class JPEGUtils {
     private JPEGUtils() {
          super();
     public static void saveJPEG(BufferedImage thumbImage, File file, double compression) throws IOException {
          BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(file));
          saveJPEG(thumbImage, out, compression);
          out.flush();
          out.close();
     public static void saveJPEG(BufferedImage thumbImage, OutputStream out, double compression) throws IOException {
          JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
          JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage);
          compression = Math.max(0, Math.min(compression, 100));
          param.setQuality((float)compression / 100.0f, false);
          encoder.setJPEGEncodeParam(param);
          encoder.encode(thumbImage);
     public static BufferedImage getJPEG(InputStream in) throws IOException {
          try {
               JPEGImageDecoder decode = JPEGCodec.createJPEGDecoder(in);
               BufferedImage im = decode.decodeAsBufferedImage();
               return im;
          } finally {
               in.close();
     public static BufferedImage getJPEG(File f) throws IOException {
          InputStream in = new BufferedInputStream(new FileInputStream(f));
          return getJPEG(in);
     public static void saveGif(RenderedImage image, File f) throws IOException {
          saveGif(image, new FileOutputStream(f));
     public static void saveGif(RenderedImage image, OutputStream out) throws IOException {
//          Last time I checked, the J2SE 1.4.2 shipped with readers for gif, jpeg and png, but writers only for jpeg and png. If you haven't downloaded the whole JAI, and you want a writer for gif (as well as readers and writers for several other formats) download:
//          http://java.sun.com/products/java-media/jai/downloads/download-iio.html
          ImageIO.write(image, "gif", out);
     public static void main(String[] args) {
          // TODO Auto-generated method stub
}

How to add a ChartOfAccounts object into the database.

how to add a ChartOfAccounts object into the database. please shows sample code
thanks

Dim CoA As SAPbobsCOM.ChartOfAccounts
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            CoA.Code = 11223344
            CoA.ExternalCode = "a1234"
            CoA.ForeignName = "f Test Account"
            CoA.Name = "Test Account"
            CoA.AccountType = SAPbobsCOM.BoAccountTypes.at_Other
            CoA.ActiveAccount = SAPbobsCOM.BoYesNoEnum.tYES
            CoA.FatherAccountKey = 100001
            If CoA.Add <> 0 Then
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            Else
                MessageBox.Show("Added Account")
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Remember the father account key must be a valid account number in the company where you are trying to add the new account. (The G/L Account code seen in the SBO client)

Pass an arrayList into a method

I am looking to pass and arraylist into a method and I am wondering how this is done...

I figured it out:
public function someMethod(someArray:ArrayList){}
I figured it was the same.
This is dealing with flex, How ever on the AS side, so its a pure AS question

Passing an object into a tag

Hello
I have a tag file called foo.tag
<%@tag description="some tag" pageEncoding="UTF-8"%>
<%@tag import="java.util.*"%>
<%@attribute name="list" type="java.util.List" required="true"%>
<h4>I am a list</h4>
<p>Class: <%=list.getClass()%></p>And in my index.jsp I do:
<%@ taglib prefix="jc" tagdir="/WEB-INF/tags" %>
<%
      List bar = new ArrayList();
      bar.add("test");
%>
<jc:foo list="<%=bar%>"/>..in order to pass the reference of bar in my tag. That works, but I know that it's "bad" practice to have <%= %> inside your JSPs. How could I improve the parameter passing? If I say <jc:foo list="bar"/> then I only get a "bar" String on the tag file.
thanks

Thanks for your reply.
But is there a better way of doing this? Yeah, there is a slightly better way if you are using JSP 2.0 (properly configured). Then you can do:
<% List bar = new ArrayList();
   bar.add("foo");
   request.setAttribute("bar", bar);
%>
<jc:foo list="${bar}"/>
    public void setList(List theList) { ... }
Can't I just
feed the object into the tag as an object?Not directly. The List you create in the scriptlet has a limited scope, just inside the _jspService method. This scope isn't really available to things like tags and EL, so you have to put it in a scope where it can be found - something like the request, or page scopes.

How do I convert an Object into an Array?

If I have an instance of type object that I know is really a DataGrid row that was cast into an object when passed to a function, how can I cast that Object to an array, such that each index of this array would correspond to the information in a given column of the row?

@Sathyamoorthi
Can you please explain what this function does? Essentially, what should be contained in the String?
I printed out the string and it seems like I am getting a random row in the Object, as opposed to first or last. Why is that?
UPDATE: I printed out the value of dataGrid0.columns[5].dataField but it just turned out to be the id of the column.

How can I convert table object into table record format?

I need to write a store procedure to convert table object into table record. The stored procedure will have a table object IN and then pass the data into another stored procedure with a table record IN. Data passed in may contain more than one record in the table object. Is there any example I can take a look? Thanks.

I'm afraid it's a bit labourious but here's an example.
I think it's a good idea to work with SQL objects rather than PL/SQL nested tables.
SQL> CREATE OR REPLACE TYPE emp_t AS OBJECT
2      (eno NUMBER(4)
3      , ename VARCHAR2(10)
4      , job VARCHAR2(9)
5      , mgr NUMBER(4)
6      , hiredate DATE
7      , sal NUMBER(7,2)
8      , comm NUMBER(7,2)
9      , deptno NUMBER(2));
10 /
Type created.
SQL> CREATE OR REPLACE TYPE staff_nt AS TABLE OF emp_t
2 /
Type created.
SQL> Now we've got some Types let's use them. I've only implemented this as one public procedure but you can see the principles in action.
SQL> CREATE OR REPLACE PACKAGE emp_utils AS
2      TYPE EmpCurTyp IS REF CURSOR RETURN emp%ROWTYPE;
3      PROCEDURE pop_emp (p_emps in staff_nt);
4 END emp_utils;
5 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY emp_utils AS
2      FUNCTION emp_obj_to_rows (p_emps IN staff_nt) RETURN EmpCurTyp IS
3          rc EmpCurTyp;
4      BEGIN
5          OPEN rc FOR SELECT * FROM TABLE( CAST ( p_emps AS staff_nt ));
6          RETURN rc;
7      END emp_obj_to_rows;
8      PROCEDURE pop_emp (p_emps in staff_nt) is
9          e_rec emp%ROWTYPE;
10          l_emps EmpCurTyp;
11      BEGIN
12          l_emps := emp_obj_to_rows(p_emps);
13          FETCH l_emps INTO e_rec;
14          LOOP
15              EXIT WHEN l_emps%NOTFOUND;
16              INSERT INTO emp VALUES e_rec;
17              FETCH l_emps INTO e_rec;
18          END LOOP;
19          CLOSE l_emps;
20      END pop_emp;
21 END;
22 /
Package body created.
SQL>Looks good. Let's see it in action...
SQL> DECLARE
2      newbies staff_nt := staff_nt();
3 BEGIN
4      newbies.extend(2);
5      newbies(1) := emp_t(7777, 'APC', 'CODER', 7902, sysdate, 1700, null, 40);
6      newbies(2) := emp_t(7778, 'J RANDOM', 'HACKER', 7902, sysdate, 1800, null, 40);
7      emp_utils.pop_emp(newbies);
8 END;
9 /
PL/SQL procedure successfully completed.
SQL> SELECT * FROM emp WHERE deptno = 40
2 /
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM
    DEPTNO
      7777 APC        CODER           7902 17-NOV-05       1700
        40
      7778 J RANDOM   HACKER          7902 17-NOV-05       1800
        40
SQL>     Cheers, APC

How can i pass a parameter into paintComponent()?

public void paintComponent(Graphics g)
Graphics2D g2 = (Graphics2D) g;
          for(int i = 150;i<=250;i+=20)
               for(int a = 50;a<=200;a+=50)
          Rectangle box = new Rectangle(i, a, 15, 15);
g2.draw(box);
this is my paintComponent method. as far as i'm concerned, all our codings for drawing must be inside this method rite? My assignment is to create something like a cinema ticket system where we will display all the seats then user enters a position then we mark it. when i prompt the user for the position..how do i pass it into this method? pls help me. obviously the coding to prompt is in another .java file.

//this is my main
public class AirAsia extends JComponent {
          static JLabel input, input2;
     private static void test(){
          JFrame frame = new JFrame("Aeroplane Seating");
          frame.setSize(500,500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setVisible(true);
          String prompt = JOptionPane.showInputDialog("Enter x");
     input = new JLabel("You have entered " +prompt);
String prompt 2= JOptionPane.showInputDialog("Enter x");
     input 2= new JLabel("You have entered " +prompt2);
          RectangleComponent component = new RectangleComponent();
frame.add(component);
          frame.setVisible(true);
private static void createAndShowGUI()
     JFrame.setDefaultLookAndFeelDecorated(true);
          test();
public static void main(String[] args)
createAndShowGUI();
//now this is my paint component in another file
public class RectangleComponent extends JComponent
public void paintComponent(Graphics g)
Graphics2D g2 = (Graphics2D) g;
          for(int i = 150;i<=250;i+=20)
               for(int a = 50;a<=200;a+=50)
          Rectangle box = new Rectangle(i, a, 15, 15);
g2.draw(box);}
          for(int i = 60;i<=160;i+=20)
               for(int a = 240;a<=820;a+=15)
          Rectangle box = new Rectangle(i, a, 15, 15);
g2.draw(box);
first of all, i ask the user to enter 2 inputs which are x and y. so now how do i pass in the x and y into paint component method so i can mark/draw the box?

How do I pass single quotes into a string variable?

Thanks for any help?
Example
Select xdat, yday
from foo
where
xdat = to_char(sysdate, 'mm/dd/yyyy')
How do I pass the single quoted stuff above into a string variable?

Thank you but that is not the same thing. I am building a dynamic sql statement and need to pass the quoted material into a statement that is quoted Is that not what my example above shows?
My example above has a quoted string inside a string. I think this is exactly what you were asking for.

How do I pass an object to a Servlet?

Hello,
I have a fully initailized object called x.
I need to invoke a servlet from an application and pass this object x to the
servlet.
This object contains all the necessary parameters which the servlet needs.
How can I invoke a servlet from a class and pass this object?
For Example:
class SendObjToServlet
try
URL u = new URL("servlet_path");
}catch(Exception e)
Now how and where do I pass an object to this servlet??
Please can any one respond?

http://www.j-nine.com/pubs/applet2servlet/
this website will give you the basic idea. It shows you how to do it with an applet the same idea will work for an applcation.
lee

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Hello,
we want to get an Z-table as tab page of the business partner-application into PCUI. It should 'only' be possible to create new entries - today there is no need to modify or delete records.
Does there exist something like a "cookbook" on this task or has anyone of you experience how to get customer-specific objects (without using EEWB) into PCUI ?
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Martin

Option 1:
If you are good in ABAP.
You can add new tab in which create a new Field group. Assign it to a model access clas in which handle the table update.You can get the details in PCUI cookbook itsel.
Option 2:
If you are good at java
Develop an FM to update the table.
Call the FM from webdynpro
Include this webdynpro as HTML viewer in PCUI.
Regards,
Abdul Raheem S

How do u pass an object into a method

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