Call variable from outside method

I have a method for a listSelectionListener with a variable in it called "results", I want to be able to get the information from this variable outside of this method. In my main class alled "gifts" I have a TextArea and I want "results" to be displayed in it but I can't get results into it because it's in a seperate method. Anyone know how I can do this?
Heres some relevant code:
public Gifts()
          super( "Spiritual Gift Database" );
          try
               Class.forName(JDBC_DRIVER);
               conn = DriverManager.getConnection(DATABASE_URL);
               stat = conn.createStatement();
               ResultSet rs = stat.executeQuery("SELECT heading1 FROM demo");
               Vector vector1 = new Vector();
               while(rs.next()) vector1.add(rs.getObject(1));
               container = getContentPane();
           container.setLayout( new FlowLayout() );
               nameListPanel = new JPanel();
               statListPanel = new JPanel();
               buttonPanel = new JPanel();
           nameList = new JList(vector1);
           nameList.setVisibleRowCount( 9 );
               nameList.setPrototypeCellValue("XXXXXXXXXXXX");
               nameList.addListSelectionListener(
                    new ListSelectionListener()
                         public void valueChanged(ListSelectionEvent event)
                              try
                                   ResultSet resultSet = stat.executeQuery("SELECT * FROM demo");
                                   StringBuffer results = new StringBuffer();
                                   ResultSetMetaData metaData = resultSet.getMetaData();
                                   int numberOfColumns = metaData.getColumnCount();
                                   for(int i = 1; i<=numberOfColumns; i++)
                                   results.append(metaData.getColumnName(i) + "\t");
                                   results.append("\n");
                                   while (resultSet.next())
                                        for(int i = 1; i<= numberOfColumns; i++)
                                        results.append(resultSet.getObject(i) + "\t");
                                        results.append("\n");
                              catch(SQLException sqlException)
                                   JOptionPane.showMessageDialog(null,sqlException.getMessage(),
                                   "Database Error", JOptionPane.ERROR_MESSAGE);
                                   System.exit(1);
               statList = new JTextArea(results.toString());
               add = new JButton("Add Entry");

Declare you variable at the class level instead of the function level, then you can see if from any method in the class.
Paul

Similar Messages

Reading a variable from one method to another method

I am pretty new to Java and object code, so please understand if you think I should know the answer to this.
I wish to pass a variable from one method to another within one servet. I have a doPost method:
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          HttpSession session = request.getSession();
         String userID = (String)session.getAttribute("userID");
         String title = request.getParameter("title");
        PrintWriter out = response.getWriter();
        out.println("userID is ..."+userID);
} and wish to pass the variable userID to:
public static void writeToDB(String title) {
         try{
              String connectionURL = "jdbc:mysql://localhost/cms_college";
              Connection connection=null;
             Class.forName("com.mysql.jdbc.Driver");
             connection = DriverManager.getConnection(connectionURL, "root", "");
             Statement st = connection.createStatement();
               st.executeUpdate ("INSERT INTO cmsarticles (title, userID) VALUES('"+title+"','"+userID+"')");
         catch(Exception e){
               System.out.println("Exception is ;"+e);
    }because, at the moment the userID cannot be resolved in the writeToDB method. Thanking you in anticipation.

Thanks for responding.
If I replace
public static void writeToDB(String title)with
public static void writeToDB(String title, String userID)It throws up an error in the following method
public void processFileItem(FileItem item) {
          // Can access all sorts of useful info. using FileItem methods
          if (item.isFormField()) {
               //Map<String, String> formParameters = new LinkedHashMap<String, String>();
               //String filename = item.getFieldName();
               //String title = item.getString();
               //System.out.println("received filename is ... " + filename );
               //formParameters.put(title, filename);
               } else {
                  // Is an uploaded file, so get name & store on local filesystem
                  String uploadedFileName = new File(item.getName()).getName();
                  File savedFile = new File("c:/uploads/"+uploadedFileName);
                  long sizeInBytes = item.getSize();
                  System.out.println("uploadedFileName is " + uploadedFileName);
                  String title = uploadedFileName;
                  System.out.println("size in bytes is " + sizeInBytes);
                  writeToDB(title);
                  try {
                    item.write(savedFile);// write uploaded file to local storage
                  } catch (Exception e) {
                    // Problem while writing the file to local storage
          }      saying there are not enough arguments in writeToDB(title);
and if I put in an extra argumenet writeToDB(title,String userID);
again it does not recognise userID

Read variable from other method

i am coding a method which required a reading from a variable in another method.
what's the syntax for getting the variable???
I tried.....
++++++++++++++++++++++++++++++++++++++++++++++++++
public static void main (String[ ]args)
range_1
private static double area (int radius, final double pi)
radius = range_1
return radius * radius * pi
++++++++++++++++++++++++++++++++++++++++++++++++++
but it doesn't work

"private static double area (int radius, final double pi)"
final double pi? as the method parameter? ROFLHAHAHAHAHAHAHAHAHAHAHA
That made my day.
As for your question, make range_1 a global variable, in other words, declare it outside your main method
Something like
public class gary{
int range_1;
public static void main (String afgfg[]){
range_1=//something;
private static double area (int radius)
radius = range_1
return radius * radius * 3.14

Calling SAPSCRIPT from CLASS-METHOD?

Is it possible to call SAPSCRIPT from a class-method?
I have no idea how to use variables - there are no global variables in classes.
thx

Hi,
The super reference can only be used in redefined methods to call superclass implementation . So probably what you can do is use upcasting and access the required superclass implementation. I can think of only this way...;-)
Ex data lr_super type ref to cl_superclass
lr_super = lr_subclass.
lr_super->method().
~Piyush Patil

How can I access my Call Handlers from outside line (outside district)

CISCO VoIP System Info:
Cisco Unity Connection version: 8.6.2ES25.21900-25
CM Admin System version: 8.6.2.21900-5 on C200M2 Servers
Our engineer setup our Call Handlers so that in our to change the recordings on them, you diall 7800 from a phone inside the office, or as he put it in the procedures, from within the district. Once you dial, you need to enter the user code, password, then the extension of the Call Handler, and we have no problems recording/changing any Call Handlers. However, due to possible inclement weather approaching in the next few weeks, I was asked how we cna change them from an outside line (manager's home, etc.). We cannot access from an outside line. 7800 is not a DID, it is simply the extension he assigned to access the call handlers. I even went so far as to setup a dummy phone and forward it to 7800, but this does not work either. It forwards to the extension's voicemail. Is there a way we can access the Call Handlers from an outside line? Any help would be gretaly appreciated. Thank you in advance.

Hey Joseph,
Go Flames ....errrrrrrrrrrrrrrrrrr maybe not so much
What you are trying to get to is really just the Greetings Administrator
conversation and there are multiple ways to get there.
For example, you can set up a Caller Input off any mailbox (Press 1-9) let's say 7 to
go to Conversation> Greetings Administrator. So you could set this on the managers mailbox
and when he calls his own number from home once his greeting
kicks in he can press 7 to link to the Greetings Administrator conversation
or
You could set up a DID DN xxx-xxx-2345 as a CTI-RP and set Call Forward All to reach Unity Connection.
In this case you will need to use the Forwarded Routing Rules = xxx-xxx-2345 route to
Greetings Administrator. Make sure to move this rule to the bottom of the list!!
Cheers!
Rob
"Why do the best things always disappear "
- The Band

Call String from another method

hey,
Im pretty new to java and Im having problems with calling a String from another method
I have two public voids, in one of them I have a String which I wanna use in another method.
Thanks

here is some of my code:
public void getOrder() {
        try {
            DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
            Document doc = docBuilder.parse(new File("c:/orders.xml"));
            // normalize text representation
            doc.getDocumentElement().normalize();
            System.out.println("Root element of the doc is " + doc.getDocumentElement().getNodeName());
            // lees orders
            NodeList orderlijst = doc.getElementsByTagName("order_naam");
            System.out.println("totale aantal orders : " + orderlijst.getLength());
         //    Element orderitem = (Element) orderlijst.item(0);
System.out.println("name=" + doc.getElementsByTagName("order_naam").item(0).getFirstChild().getNodeValue());
          String st =doc.getElementsByTagName("order_naam").item(0).getFirstChild().getNodeValue();
public void createGUI () {
        this.removeAll();
        lbltest = new JLabel();
        lbltest.setBounds(20, 40, 150, 20);
        lbltest.setFont(new Font("Verdana", Font.BOLD, 12));
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Reaching a variable from another method

I want to "reach" the String variable 'a' from the method 'aMethod()'.
What am I doing wrong when writing:
String newVariable = aMethod().a;
/Cullum

You can't reach local variables.
Kaj

Problem with calling dispose() from static method

I have one class, where I have this:
EditorWindow.disposeWindow();and class EditorWindow, where I have static method
protected static void disposeWindow() {
dispose();
}But, dispose() cant be called from static method. Is there any way to hide or close the EditorWindow window?

kaneeec wrote:
I dont have references of these windows, because it would be too difficult. They are created just by new Window().setVisible(true);It's not difficult:
Window w = new Window();
w.setVisible(true);Now you have a reference (w) to your window that you can later call dispose() on.
w.dispose();dispose() isn't a static method, so you have no choice but to call it on a specific instance.

Someone calling you from outside the United States

If my friend calls me from Australia and they use either a land line or a cell phone. Am I going to get charged extra at all even if my plan is older on my cell phone? I only get 500 shared minutes a month at the moment for all types of minutes except M2M. Also what type of minutes am I going to eat (i.e: my everyday plan minutes or roaming) if I am currently in my home state in the US? Also is it going to show up on the bill differently then normal than any other type of call?
Feedback and such would be much appreciated! Thanks

Suemac wrote:
If my friend calls me from Australia and they use either a land line or a cell phone. Am I going to get charged extra at all even if my plan is older on my cell phone? I only get 500 shared minutes a month at the moment for all types of minutes except M2M. Also what type of minutes am I going to eat (i.e: my everyday plan minutes or roaming) if I am currently in my home state in the US? Also is it going to show up on the bill differently then normal than any other type of call?
Feedback and such would be much appreciated! Thanks
As long as you are in the US when you receive their call, you will not get charged anything extra for receiving this call.

Using a variable from another method within another method

I have a couple methods. In the beginning of the class I declared the double variables. Then I have a method1 that in that class that changes those double variables. Then the last method2 runs, and is suppose to print information to the screen with the changed variable information all being called from another class. How do I get those changed double variables to be read in method2?

Sorry about all that, when I paste it in from the compiler it's skews it some, but hopefully this should be more readable
* Project Filename: Lab1s2
* Program Filename: Lab1s2.java
* I/O Files used:
* Fuction:          This program will use interactive input to ask cost of a
*                   product in dollars and cents (eg. 17.50). If the product
*                   is not less than $100.00, an error message will be displayed
*                   and input will be requested again. Once a valid value is
*                   given, the program will calculate the fewest bills and change
*                   to be returned if the customer gives a $100.00 bill.
* Formulas:         (100 - amount = change)
* Algorithm:
* Purpose:          The main method calls other methods found in the MoneyXX class
*                   that will accomplish the function of the project.
public class Lab2sl
     public static void main( String[] args ) // main method begins program execution
     Money2sl myMoney2sl = new Money2sl(); // create myMoney2sl object and assign it to Money2sl
        myMoney2sl.inputSL();// calls input method and pass argument
        myMoney2sl.changeSL(); // calls change method
        System.out.println(); // output a blank line
     myMoney2sl.outputSL(); //calls outputSL to show results
* Project Filename: Money2SL.java
import java.util.Scanner;
import java.util.Calendar;
public class Money2sl
     Scanner input = new Scanner( System.in ); // create Scanner to obtain input from command window
    private double change,
                   amount; // instant variable, stores amount
    private double twentyD = 20.00;
    private double tenD = 10.0;
    private double fiveD = 5.0;
     private double dollar = 1.0;
     private double quarter = 0.25;
     private double dime = 0.10;
     private double nickel = 0.05;
     private double penny = 0.01;
     private double numTwentyD;
     private double numTenD;
     private double numFiveD;
     private double numDollar;
     private double numQuarter;
     private double numDime;
     private double numNickel;
     private double numPenny;
    // inputSL() method gets amount, checks to see if it is under $100, stores amount into variable
    public void inputSL() //input method
         Calendar dateTime = Calendar.getInstance(); // get current date and time
        //print date and time
        System.out.printf( "%s\n", "nothing" );
        System.out.printf( "%1$ta, %1$tB. %1$te, %1$tY %1$tr\n\n", dateTime );
         //print output
            System.out.println( "Please enter the amount of money (less than $100) that you will spend: "); // prompt
          amount = input.nextDouble();
          while ( amount > 100 )
              System.out.println( "error - enter amount less than $100");
            System.out.println( "Please enter the amount of money (less than $100) that you will spend: "); // prompt
              amount = input.nextDouble();
         } // end inputSL method
    // changeSL() calculates change from amount entered out of $100
     public void changeSL()
          change = 100 - amount; // calculate change
          while(change > 0)
        if ( change - fiveD >= 0 )
                    numFiveD ++;
                   change -= fiveD;
          if ( change - fiveD >= 0 )
                    numFiveD ++;
                   change -= fiveD;
          if ( change - dollar >= 0 )
                    numDollar++;
                   change -= dollar;
          if ( change - quarter >= 0 )
                    numQuarter ++;
                   change -= quarter;
          if ( change - dime >= 0 )
                    numDime ++;
                   change -= dime;
          if ( change - nickel >= 0 )
                   numNickel ++;
                   change -= nickel;
          if ( change - penny >= 0 )
                    numPenny ++;
                   change -= penny;
     } // end changeSL method
    //outputSL() displays original amount, change dollar amount, and change in individual bills and coins
    public void outputSL()
         System.out.printf( "$%.2f dollars will return $%.2f, which is: ",
                             amount, change );
        System.out.println(); // blank line
         System.out.println(); // blank line
        if ( numTwentyD > 0 )
             if ( numTwentyD > 1)
                  System.out.println( numTwentyD + " twenty dollar bills" );
             System.out.println( numTwentyD + " twenty dollar bill" );
        if ( numTenD > 0)
             if ( numTenD > 1 )
                  System.out.println( numTwentyD + " ten dollar bills" );
             System.out.println( numTwentyD + " ten dollar bill" );
        if ( numFiveD > 0)
             if ( numFiveD > 1 )
                  System.out.println( numFiveD + " five dollar bills" );
             System.out.println( numFiveD + " five dollar bill" );
        if ( numDollar > 0)
             if ( numDollar > 1 )
                  System.out.println( numDollar + " one dollar bills" );
             System.out.println( numDollar + " one dollar bill" );
          if ( numQuarter > 0)
             if ( numQuarter > 1 )
                  System.out.println( numQuarter + " quarters" );
             System.out.println( numDollar + " quarter" );
          if ( numDime > 0)
             if ( numDime > 1 )
                  System.out.println( numDime + " dimes" );
             System.out.println( numDime + " dime" );
          if ( numNickel > 0)
             if ( numNickel > 1 )
                  System.out.println( numNickel + " nickels" );
             System.out.println( numNickel + " nickel" );
          if (numPenny > 0)
             if ( numPenny > 1 )
                  System.out.println( numPenny + " pennies" );
             System.out.println( numPenny + " penny" );
}

Using variable from another method?

Hi all, i have the code below and am getting error of:
cannot find symbol
symbol : variable myList
location: class Driver
          myList.addFirst(nodeone);
The areas noted are in bold, i want to seperate my code in the if statements into seperate methods which can be called, but when i do this i dont have access to the mylist variable. am i getting the right end of the stick? Hope someone can help. Thx
import java.util.*;
public class Driver
public static void main(String args[])
List myList = new List();
System.out.println("COMMAND LIST");
System.out.println("");
System.out.println("addFirst - Inserts a node at the beginning of the list");
System.out.println("addLast - Inserts a node at the end of the list");
System.out.println("getFirst - Returns the first node in the list");
System.out.println("getLast - Returns the last node in the list");
System.out.println("");
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     String command;
     System.out.print("Please enter a command: ");
     command = input.next();
     if (command.equals("addFirst"))
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          else if (command.equals("addLast"))
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                    System.out.print("Enter name of Last Node: ");
                    nodeName = input.next();
                    Node nodelast = new Node(nodeName);
                    myList.addLast(nodelast);
                    System.out.println("Setting Last Node");
          public static void inputAddFirst()
          String nodeName;
          Scanner input = new Scanner(System.in);
          System.out.print("Enter name of First Node: ");
          nodeName = input.next();
          Node nodeone = new Node(nodeName);
          myList.addFirst(nodeone);
          System.out.println("Setting First Node");
}

You can pass myList to the method that uses it.
Or, you can make inputAddFirst just return an object, and add it in main.
Or you could make myList a field, rather than a local variable. If you do that however, you'd probably want the stuff in main to go into a new, non-static method. Also you shouldn't use fields for what are in essence temporary variables, so ask yourself whether myList really represents the ongoing state of whatever object it's in.

Pass a variable from a method to another

Hello,
how is it possible to use, in a method, a variable instanciated in another method? None of them is a constructor. I saw many examples in the tutorials with constructors, but there it's different...
This is a piece of my program:
String string_;
String other;
public String getName()throws IOException{
     byte[] input = new byte[50];
     System.out.println("give string_");
     System.in.read(input);
     String other = new String(input);
     other = other.trim();
     System.out.println("other = "+other);
     return other ;
public String Native( ){
     System.out.println("other in Native() = "+ other);
     string_ = other;
     return string_;
When I run it I get the answer:
other in Native()= null
So the value I gave to other didn't pass from getName() to Native()...
How can I do that?

Your code:
String string_;
String other;
public String getName()throws IOException {
    byte[] input = new byte[50];
    System.out.println("give string_");
    System.in.read(input);
    String other = new String(input);
    other = other.trim();
    System.out.println("other = "+other);
    return other;
public String Native() {
    System.out.println("other in Native() = "+ other);
    string_ = other;
    return string_;
}change to:
String string_;
String other;
public String getName()throws IOException {
    byte[] input = new byte[50];
    System.out.println("give string_");
    System.in.read(input);
    String other = new String(input);
    other = other.trim();
    System.out.println("other = "+other);
    return other;
public String Native(String another_other) {
    System.out.println("other in Native() = "+ other);
    another_other+="\tanother_other";
    string_ = another_other;
    return string_;
}You'll see the change. You want to pass somthing into Native specifically and change it locally, and see the difference, right? Well this is the way you pass something in.
~Bill

Problem calling servlet from doget method of another servlet

hi,
Iam trying to post an html form written in the doGet() method
of a servlet to pass this information to another servlet's doPost() method. Iam giving the following URL:
"<FORM ACTION=http://localhost:8080/examples/servlet/UpdateProcessServlet" +
"METHOD=POST>"
But its not happening,the error says that "the page cannot be found" The servlet is not getting called at all. would someboy please help me in this regard.
Thanks

#1 Iam calling servlet 2 from here
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
session=request.getSession(false);
out.println
(ServletUtilities.DOCTYPE +
"<!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN>"+
"<HTML>" +
"<BODY>" +
"<P CLASS=LARGER>" +
"<FORM ACTION=http://localhost:8080/examples/servlet/UpdateProcessServlet METHOD=POST>"
"<INPUT TYPE=SUBMIT NAME=submitButton Value=submit>" +
"</BODY> " +
"</HTML>" );
#2 This should get called and print me "Iam in doPost method
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
url = "jdbc:odbc:Resume";
System.out.println("Iam in doPost method");
response.setContentType("text/html");
out = response.getWriter();
out.println("This is the last servlet for this project:");
bool=false;
check=false;
Thank...:)

How to access (call) variables from multiple components

I have what I think is a basic task, but I cant seem to get it to work. I have a Flex project with one application. In addition to the one application, I have many components that are used in the application. These components vary from simple (a ComboBox) to complex (many sub-components). What I need to do is define a viable in one component and access it in another component. I can't seem to do this. Below is an example of how I think it should be:
Component1
<mx:Script>
       <![CDATA[
        [Bindable]
        private var userID:int=0;
       ]]>
</mx:Script>
Component2
<mx:TextInput text="{Component1.userID}"/>
Any help you can provide would be beneficial.
Lee

Hello,
     You may also want to consider using the mx.core method.
     In your main application script area define all of your public variables and functions. Then from your component, you can reference these absolutely with the following syntax.

[Bindable]
public var userID:int;

private function init():void {
     var com_UserID = mx.core.Application.application.userID;
Using this method ensures that you will have access to any Function or variable within the scope of the project.
Kind Regards,
Dr. Ivan Alexander, Ph.D.
Sr. Applications Engineer
FlexAppsStore.com
Sun Microsystems
MySQL Enterprise Ready Partner 2009

Calling variables from a loop

Hi
I have 6 variables declaerd:
b_banner0 iloug.iloug_activities.banner0%type;
b_banner1 iloug.iloug_activities.banner1%type;
b_banner2 iloug.iloug_activities.banner2%type;
b_banner3 iloug.iloug_activities.banner3%type;
b_banner4 iloug.iloug_activities.banner4%type;
b_banner5 iloug.iloug_activities.banner5%type;
i would like to loop through the variables and do with them something, is it possible to call the variables in a dynamic way, somthong like this:
for i IN 0..5 loop
if not(b_banner| |i IS NULL) then
end if;
end loop;i get an error message that b_banner has to be declared, apperantly, it doesnt understand the | | sign in this case, is there another way?
Thx in advance
Esther
null

Hy Esther in this case declare the vars as one PLSQL-Table/Varray, then you can use the for -loop efficient;
Karl[
QUOTE]Originally posted by Esther levin ([email protected]):
Hi
I have 6 variables declaerd:
b_banner0 iloug.iloug_activities.banner0%type;
b_banner1 iloug.iloug_activities.banner1%type;
b_banner2 iloug.iloug_activities.banner2%type;
b_banner3 iloug.iloug_activities.banner3%type;
b_banner4 iloug.iloug_activities.banner4%type;
b_banner5 iloug.iloug_activities.banner5%type;
i would like to loop through the variables and do with them something, is it possible to call the variables in a dynamic way, somthong like this:
for i IN 0..5 loop
if not(b_banner| |i IS NULL) then
end if;
end loop;i get an error message that b_banner has to be declared, apperantly, it doesnt understand the | | sign in this case, is there another way?
Thx in advance
Esther
null

Call variable from outside method

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