How to pass a variable in current class for access in next class.

Hi Everyone,
I'm new in this iphone development.so please anyone help me .
My question is How can we declare a variable for, select a row in current class which read as input string in next class Soap Message.
Means in my 1st class i am getting web response in array as a name like john, now if i m clicking on john so its call another web service for john details.so how can i select ( john ) cell to call in next class Soap Message.
Please anyone help me..
Sorry for bad english.
Regards:
Maddy

You need to ask in the iPhone Developer forums:
http://devforums.apple.com

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How to pass a variable from one class to another class?

Hi,
Is it possible to pass a variable from one class to another? For e.g., I need the value of int a for calculation purpose in method doB() but I get an error <identifier> expected. What does the error mean? I know, it's a very, very simple question but once I learn this, I promise to remember it forever. Thank you.
class A {
int a;
int doA() {
      a = a + 1;
      return a;
class B {
int b;
A r = new A();
r.a; // error: <identifier> expected. What does that mean ?
int doB() {
     int c = b/a; // error: operator / cannot be applied to a
}Thank you!

elaine_g wrote:
I am wondering why does (r.a) give an error outside the method? What's the reason it only works when used inside the (b/r.a) maths function? This is illegal syntax:
class B {
int b;
A r = new A();
r.a; //syntax error
}Why? Class definition restricts what you can define within a class to a few things:
class X {
    Y y = new Y(); //defining a field -- okay
    public X() { //defining a constructor -- okay
    void f() { //defining a method -- okay
}... and a few other things, but you can't just write "r.a" there. It also makes no sense -- that expression by itself just accesses a field and does nothing with it -- why bother?
This is also illegal syntax:
int doB() {
      A r = new A();
      r.a; // error: not a statement
}Again, all "r.a" does on its own is access a field and do nothing with it -- a "noop". Since it has no effect, writing this indicates confusion on the part of the coder, so it classified as a syntax error. There is no reason to write that.

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Edited by: 791907 on Sep 24, 2010 3:15 AM

hi saichand
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How to pass session variable value with GO URL to override session value

Hi Gurus,
We have below requirement.Please help us at the earliest.
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URL:
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Hi,
Check those links might help you.
Integrating Oracle OBIEE Content using GO URL
How to set session variables using url variables | OBIEE Blog
OBIEE 10G - How to set a request/session variable using the Saw Url (Go/Dashboard) | GerardNico.com (BI, OBIEE, O…
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Hi,
I tried like this.
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Arpita

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elaine_g wrote:
I am wondering why does (r.a) give an error outside the method? What's the reason it only works when used inside the (b/r.a) maths function? This is illegal syntax:
class B {
int b;
A r = new A();
r.a; //syntax error
}Why? Class definition restricts what you can define within a class to a few things:
class X {
    Y y = new Y(); //defining a field -- okay
    public X() { //defining a constructor -- okay
    void f() { //defining a method -- okay
}... and a few other things, but you can't just write "r.a" there. It also makes no sense -- that expression by itself just accesses a field and does nothing with it -- why bother?
This is also illegal syntax:
int doB() {
      A r = new A();
      r.a; // error: not a statement
}Again, all "r.a" does on its own is access a field and do nothing with it -- a "noop". Since it has no effect, writing this indicates confusion on the part of the coder, so it classified as a syntax error. There is no reason to write that.

JSP -- how to pass a variable

Hi,
I am relatively new to JSP/Java and am currently trying to figure out how to pass a value gotten from running a query into another query.
My code is below .. I am trying to pass 'tsid'. For simplicity I have hard-coded some values. I have tried 2 different methods (c:set & String) and bolded them below. I wanted to pass the tsid into the sql2 query.
<%@ page import="java.sql.*"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
    Connection connection = null;
    try{
        String tpid="1";
        String tdate="2005-11-11";
        String tsr01="3";
        String tsr02="54";
        String tsr03="64";
        String tsr04="90";
        String tsr05="54";
        String tsr06="17";
        String tsr07="null";
        String tsr08="null";
        String tsr09="null";
        String tsr10="null";
        String tsr11="null";
        String tsr12="null";
        String tsr13="null";
        String tsr14="null";
        String tsr15="null";
        String tz_1l1="111";
        String tz_1u1="111";
        String tz_1l2="111";
        String tz_1u2="111";
        String tz_1l3="111";
        String tz_1u3="111";
        String tz_1l4="111";
        String tz_1u4="111";
        String tz_1l5="111";
        String tz_1u5="111";
        String tz_2l1="111";
        String tz_2u1="111";
        String tz_2l2="111";
        String tz_2u2="111";
        String tz_2l3="111";
        String tz_2u3="111";
        String tz_2l4="111";
        String tz_2u4="111";
        String tz_2l5="111";
        String tz_2u5="111";
        Class.forName("org.postgresql.Driver");
        connection = DriverManager.getConnection("jdbc:postgresql:dbName","postgres","dbPassword");
        Statement stmt1 = connection.createStatement();
        Statement stmt2 = connection.createStatement();
        Statement stmt3 = connection.createStatement();
        String sql1="INSERT INTO t_test_setup_results (tsr_tpid, tsr_tester, tsr_athlete, tsr01, tsr02, tsr03, tsr04, tsr05, tsr06, tsr07, tsr08, tsr09, tsr10, tsr11, tsr12, tsr13, tsr14, tsr15, tsr_date) VALUES ('"+tpid+"' , '15', '9', "+tsr01+", "+tsr02+", "+tsr03+", "+tsr04+", "+tsr05+", "+tsr06+", "+tsr07+", "+tsr08+", "+tsr09+", "+tsr10+", "+tsr11+", "+tsr12+", "+tsr13+", "+tsr14+", "+tsr15+", '"+tdate+"' );";
     stmt1.executeUpdate(sql1);
     ResultSet rs2 = stmt2.executeQuery("SELECT tsr_id FROM t_test_setup_results WHERE tsr_date='"+tdate+"' AND tsr_tpid='"+tpid+"' AND tsr_athlete='9';");
        %>
     <c:set param="tsid2" value="${rs2.rows[0].tsr_id}" />
     <%
        String tsid="$rs2.rows[0].tsr_id}";
        String sql2="INSERT INTO t_test_zones (tz_tsrid, tz_1l1, tz_1u1, tz_1l2, tz_1u2, tz_1l3, tz_1u3, tz_1l4, tz_1u4, tz_1l5, tz_1u5, tz_2l1, tz_2u1, tz_2l2, tz_2u2, tz_2l3, tz_2u3, tz_2l4, tz_2u4, tz_2l5, tz_2u5) VALUES ('"+tsid+"', "+tz_1l1+", "+tz_1u1+", "+tz_1l2+", "+tz_1u2+", "+tz_1l3+", "+tz_1u3+", "+tz_1l4+", "+tz_1u4+", "+tz_1l5+", "+tz_1u5+", "+tz_2l1+", "+tz_2u1+", "+tz_2l2+", "+tz_2u2+", "+tz_2l3+", "+tz_2u3+", "+tz_2l4+", "+tz_2u4+", "+tz_2l5+", "+tz_2u5+");" ;
        stmt2.executeUpdate(sql2);
%>
     <result>success</result>
<%
    catch (Exception e) {
        e.printStackTrace();
%>
     <result>failure</result>
<%
    } finally {
        try {
            connection.close();
        } catch (SQLException e) {
%>this is the error I get with the above:
org.apache.jasper.JasperException: /my-apps/Peak/Jsp/submitNewTestData.jsp(64,1) Attribute param invalid for tag set according to TLD
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:405)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:234)
org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:989)
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:710)
org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1441)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
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org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
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org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
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OK,
here is what I currently have:
%>
     <c:set var="tsid2" value="${rs2.rows[0].tsr_id}" />
     <%
        String tsid= tsid2;
        String sql2="INSERT INTO t_test_zones (tz_tsrid, tz_1l1, tz_1u1, tz_1l2, tz_1u2, tz_1l3, tz_1u3, tz_1l4, tz_1u4, tz_1l5, tz_1u5, tz_2l1, tz_2u1, tz_2l2, tz_2u2, tz_2l3, tz_2u3, tz_2l4, tz_2u4, tz_2l5, tz_2u5) VALUES ('"+tsid+"', "+tz_1l1+", "+tz_1u1+", "+tz_1l2+", "+tz_1u2+", "+tz_1l3+", "+tz_1u3+", "+tz_1l4+", "+tz_1u4+", "+tz_1l5+", "+tz_1u5+", "+tz_2l1+", "+tz_2u1+", "+tz_2l2+", "+tz_2u2+", "+tz_2l3+", "+tz_2u3+", "+tz_2l4+", "+tz_2u4+", "+tz_2l5+", "+tz_2u5+");" ;
     stmt2.executeUpdate(sql2);NOW I get sucess (which is what it should be) OR that tsid2 could not be resolved. Why the back and forth errors? is it a timing thing? (ie it sometimes takes longer to query the database?? )
If it is a timing thing, how can i fix this?

How to call a variable in another class????

if i have two classes in a package. From one class, how do i get the value of one of the variable in the other class.
For example;
Class A have a variable call totalNum which have a value initialise.
Class B wan to get the value variable totalNum in class A.
So do i go abt calling it?
Cheers

For example;
Class A have a variable call totalNum which have a
value initialise.
Class B wan to get the value variable totalNum in
class A.Your explanation is far from clear. Is the variable in class A a field? If yes, is it a static field? Is it declared public, private, etc.?
If you don't understand the above questions, you should do the following:
1) Learn the basics of the Java language from the Java Tutorial and/or from an entry-level book: http://java.sun.com/docs/books/tutorial/
2) Post future question in the New To Java Technology forum.

Passing a variable from one class to another

Hello:
I am new to java programming. I am developing an application in Java
At a particular JTextField call it jtf3, I am invoking Calendar application by clikcing a jbutton.
I would like to set text in jtf by obtaining the date clicked by the user. I am storing complete date string in the Calendar application during ActionPerformed event at Calendar Application level.
I do not know how to pass this string to calling frame as it does not listen to the button event happening at the Calendar Application.
Much appreciated
Thanks a lot for your time
regards

This is the application from which the I am calling the calendar application.
The method setDate set the date obtained from calendar class during actionperformed event.
The actionperfomed event from CalendarClass is pasted below as well.
Much appreciated
import javax.swing.JFrame;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
import java.awt.*;
public class TestDrive
public static void main(String[] args) {
DatePanelFrame dpf = new DatePanelFrame();
dpf.addWindowListener(new WindowAdapter( ) {
public void windowClosing(WindowEvent we) { System.exit(0); }
dpf.pack();
dpf.setVisible(true);
class DatePanelFrame extends JFrame {
JTextField djtf;
String dateInput;
public DatePanelFrame() {
setTitle("Date Panel");
setSize(100, 800);
setLocation(300, 100);
Container content = getContentPane();
JPanel datePanel = new JPanel();
JButton calButton = new JButton(".....");
datePanel.add(calButton, BorderLayout.SOUTH);
djtf = new JTextField(" ");
datePanel.add(djtf, BorderLayout.NORTH);
content.setLayout(new BorderLayout());
content.add(datePanel, BorderLayout.CENTER);
calButton.addActionListener(new ActionListener()
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JFrame fr = new CalendarClass();
fr.setSize(400, 400);
fr.setLocation(600, 100);
ObjCal oc = new ObjCal();
fr.setVisible(true);
public void setDate(String d)
djtf.setText(d);
repaint();
System.out.println(djtf.getText());
The ActionPerformed event from CalendarClass
jbtArray.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent event)
if (event.getActionCommand() != " ")
          daySelected = event.getActionCommand();
          yearSelected = jtfYear.getText();
          int intYearSelected = Integer.valueOf(yearSelected).intValue();
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          intDaySelected = Integer.valueOf(daySelected).intValue();
          int intMonthSelected = getMonthNum(monthSelected);
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          DatePanelFrame dpf = new DatePanelFrame();
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How to pass a variable in current class for access in next class.

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