Sending a value to a public class

Hi
i have a minor problem i think
i have 2 frames in this program
it has a variable on a first frame to keep a value of 2 buttons on this frame
for example when a user clicks on first button the variable will keep "True" (boolean)
if the user clicks on the second button the variable will keep "False"
after the user click the buttons, Second frame shows
the problem is the second frame gets the value but it has no value in the second frame class
the main point of this is to run one process if st is true and onother if it is false
the second frame will be needed in the final version to give the user an option
this is the code
The first frame code
void db_actionPerformed(ActionEvent e)
boolean st=true;
Frame2 F2 = new Frame2(st);
F2.setSize(650,450);
F2.setVisible(true);
The code for Second frame
public class Frame 2 extends JFrame {
//int total;
//************************HOW CAN i get the value for st here????
//System.out.print(st);
  XYLayout xYLayout1 = new XYLayout();
  JTextField empnoField = new JTextField();
  JTextField weeknoField = new JTextField();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JLabel jLabel4 = new JLabel();
if(!st)
  HoursProcess dbh=new HoursProcess();
else
  DayProcess dbd= new DayProcess();
  public Frame2(boolean st) {
    try {
    System.out.println("..................");
//****************************** it shows the St value*******
    System.out.println(st);
      jbInit();
       closemain();
      //firstinterbuttons();
     // nocurrentRec();
    catch(Exception e) {
      e.printStackTrace();
  }}

Thanks it is almost working
But the if condition inside public class doesn't work
it gives an error message "illegal start of type"
how can i solve this problem
Thanks
public class Frame 2 extends JFrame
//int total;
  XYLayout xYLayout1 = new XYLayout();
JTextField empnoField = new JTextField(); 
JTextField weeknoField = new JTextField();   
JLabel jLabel1 = new JLabel(); 
JLabel jLabel2 = new JLabel(); 
JLabel jLabel3 = new JLabel(); 
JLabel jLabel4 = new JLabel();
if(!st)
HoursProcess dbh=new HoursProcess();
else 
DayProcess dbd= new DayProcess();
}

Similar Messages

  • I want to send a value from JSP file to another JSP file without..

    I want to send a value from one.JSP file to another two.JSP file without to show the content HTML of the one.JSP in two.JSP (with include), only take the values processed in a Bean :
    ===================
    Bean
    package pck;
    import java.io.*;
    public class yyyy {
         public String getXxx() {    
              return cccc;
    ========================
    one.JSP
    <jsp:useBean id="idBean" class="pck.yyyy" scope="??"/>
    <%idBean.setXxx(ccc);%>
    ========================
    two.JSP
    <%@ include file="one.jsp"%>
    <%=idBean.getXxx()%>
    but without to show the content HTML of one.JSP in two.JSP.
    Can someone help me?, please.

    Why don't just put the common code in a separate file and include it in both. i.e. the code that is in one.jsp that is needed by two.jsp could be put in a common file and included in both pages, thus the HTML is separated off. If this will not work, set a boolean value in two.jsp that can be used by one.jsp to decide if the HTML should be displayed or not.
    Steve

  • Wanna send integer value by reference in function

    I wanna send integer value by reference thro' function. Here's the code going.
    class test
    basic b = new basic();
    test()
    test2.Fuction(b.value);
    class basic
    int value;
    basic(){}
    //////here i want value to be affected by Function.I don't want it affected by value, but by reference.
    class test2
    public static void Function(int value)
    value++;

    If you want to update the value in your b object, then you have to pass the reference of that object to test2.Function(..). Here is one way to do it:
    class test {
      basic b = new basic();
      test() {
        test2.Function(b);
    class test2 {
      public static void Function(basic b) {
        b.value++;
    }It's a good idea to follow the java naming convention. Classes should begin with an upper case letter. Methods and variable names with a lover case letter (but final static variables with all upper case letters).

  • How to send List from jsp to action class

    hi,
    i m fetching list from database and showing to jsp as follows:
    user can update that list i need to collect that updated list in next action class but i m not able to do that. can anybody suggest me any solution the code i m using is as follows:
    <html:form action="/myUpdate">
    <table>
    <tr>
         <td>
              <label><input type="text" property="name" name="name" value=""/></label>
         </td>
    </tr>
    <logic:iterate id="address" name="info" property="addressList" indexId="rowindex">
         <tr>
         <td>
         <input type="text" value="" name="address[<bean:write name="rowindex"/>].houseno" />
         </td>
         <td>
         <input type="text" value="" name="address[<bean:write name="rowindex"/>].roadname" />
         </td>
         <td>
         <input type="text" value="" name="address[<bean:write name="rowindex"/>].city" />
         </td>
         <td>
         <input type="text" value="" name="address[<bean:write name="rowindex"/>].state" />
         </td>
         <td>
         <input type="text" value="" name="address[<bean:write name="rowindex"/>].country" />
         </td>
         </tr>
         </logic:iterate>
    <tr>
         <html:submit/>
    </tr>
    </table>
    </html:form>
    here in privious action i m settting bean object in session with name 'info'. it is fetching data and disply it correctly but when i m trying to get this updated data in myUpdate action i m not getting list element.

    --------------- MyBean.java----------------------
    package form;
    import java.util.Iterator;
    import java.util.List;
    import javax.servlet.http.HttpServletRequest;
    import org.apache.log4j.Logger;
    import org.apache.struts.action.ActionForm;
    import org.apache.struts.action.ActionMapping;
    * @author Sushant.Raut
    public class MyBean extends ActionForm {
         Logger log = Logger.getLogger(this.getClass());
         /* (non-Javadoc)
          * @see org.apache.struts.action.ActionForm#reset(org.apache.struts.action.ActionMapping, javax.servlet.http.HttpServletRequest)
         @Override
         public void reset(ActionMapping mapping, HttpServletRequest request) {
              // TODO Auto-generated method stub
              super.reset(mapping, request);
              this.name = "";
         public String toString()
              System.out.println("name : " + this.name );
              for(Iterator<Address> iterator = addressList.iterator(); iterator.hasNext();)
                   Address address = (Address)iterator.next();
                   System.out.println("city : " + address.getCity());
              return null;
         private static final long serialVersionUID = 1L;
         private String name;
         private List<Address> addressList;
          * @return the names
         public MyBean()
              log.info("Bean Construtor is called.");
              System.out.println("MyBean:::::constructor is called.");
         public String getName() {
              log.info("Bean getName() is called");
              return name;
          * @param names the names to set
         public void setName(String name) {
              this.name = name;
              log.info("Bean setName() is called");
          * @return the address
         public List<Address> getAddressList() {
              log.info("Bean getAddressList() is called");
              return addressList;
          * @param address the address to set
         public void setAddressList(List<Address> address) {
              log.info("Bean setAddressList() is called");
              this.addressList = address;
         public Address getAddress(int index)
              log.info("Bean getAddress(int index) is called");
              while(index >= addressList.size())
                   addressList.add(new Address());
              return this.addressList.get(index);
         public void setAddress(int index, Address address)
              log.info("Bean setAddress(int index, Address address)) is called");
              this.addressList.add(index, address);
    }------------- Address.java------------
    package form;
    import javax.servlet.http.HttpServletRequest;
    import org.apache.struts.action.ActionMapping;
    * @author Sushant.Raut
    public class Address {
         private String houseno;
         private String roadname;
         private String city;
         private String state;
         private String country;
         public Address(){}
          * @return the houseno
         public String getHouseno() {
              return houseno;
          * @param houseno the houseno to set
         public void setHouseno(String houseno) {
              this.houseno = houseno;
          * @return the roadname
         public String getRoadname() {
              return roadname;
          * @param roadname the roadname to set
         public void setRoadname(String roadname) {
              this.roadname = roadname;
          * @return the city
         public String getCity() {
              return city;
          * @param city the city to set
         public void setCity(String city) {
              this.city = city;
          * @return the state
         public String getState() {
              return state;
          * @param state the state to set
         public void setState(String state) {
              this.state = state;
          * @return the country
         public String getCountry() {
              return country;
          * @param country the country to set
         public void setCountry(String country) {
              this.country = country;
         public void reset(ActionMapping mapping, HttpServletRequest request)
              this.city = "";
              this.country = "";
              this.houseno = "";
              this.roadname = "";
              this.state = "";
    }------ MyAction.java------
    package action;
    import java.util.ArrayList;
    import java.util.List;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import org.apache.log4j.Logger;
    import org.apache.struts.action.Action;
    import org.apache.struts.action.ActionForm;
    import org.apache.struts.action.ActionForward;
    import org.apache.struts.action.ActionMapping;
    import form.Address;
    import form.MyBean;
    * @author Sushant.Raut
    public class MyAction extends Action {
         Logger log = Logger.getLogger(this.getClass());
         public ActionForward execute(ActionMapping mapping, ActionForm form,
                   HttpServletRequest request, HttpServletResponse response)throws Exception{
              MyBean myBean = new MyBean();
              log.info("Bean is Initialised.");
              String name = "sushant";
              Address address = new Address();
              address.setCity("city1");
              address.setCountry("India");
              address.setHouseno("1111");
              address.setRoadname("xyz Road");
              address.setState("MH");
              Address address1 = new Address();
              address1.setCity("Hyderabad");
              address1.setCountry("India");
              address1.setHouseno("2222");
              address1.setRoadname("ABC Road");
              address1.setState("AP");
              List<Address> addressSet = new ArrayList<Address>();
              addressSet.add(address);
              addressSet.add(address1);
              myBean.setName(name);
              myBean.setAddressList(addressSet);
              request.getSession().setAttribute("info", myBean);
              log.info("Bean is bound to session.");
              System.out.println("MyBean object is bound to session.");
              System.out.println(myBean);
              return mapping.findForward("success");
    }-------- show.jsp-----------
    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
        pageEncoding="ISO-8859-1"%>
    <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
    <%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
    <%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>Insert title here</title>
    </head>
    <body>
         <html:form action="/myUpdate">
              <table>
                   <tr>
                        <td>
                             <label><html:text property="name" name="info"/></label>
                        </td>
                   </tr>
                   <logic:iterate id="address" name="info" property="addressList" indexId="rowindex">
                        <tr>
                             <td>
                                  <html:text property="houseno" name="address" indexed="true"/>
                             </td>
                             <td>
                                  <html:text property="roadname" name="address" indexed="true"/>
                             </td>
                             <td>
                                  <html:text property="city" name="address" indexed="true"/>
                             </td>
                             <td>
                                  <html:text property="state" name="address" indexed="true"/>
                             </td>
                             <td>
                                  <html:text property="country" name="address" indexed="true"/>
                             </td>
                        </tr>
                   </logic:iterate>
                   <tr>
                        <html:submit title="Submit"/>
                   </tr>
              </table>
         </html:form>
    </body>
    </html>

  • How can i pass the values to method public static void showBoard(boolean[][

    I need x and y to pass to the method
    public static void showBoard(boolean[][] board
    i am very confused as to why its boolean,i know its an array but does that mean values ar true or false only?Thanks
    import java.util.Random;
    import java.util.Scanner;
    public class Life1
         public static void main(String[] args)
              int x=0;
              int y=0;
              Scanner keyIn = new Scanner(System.in);
              System.out.println("Enter the first dimension of the board : ");
              x = keyIn.nextInt();
              System.out.println("Enter the second dimension of the board : );
              y = keyIn.nextInt();
              boolean[][] board = new boolean[x][y];
              fillBoard(board);
              showBoard(board);
              //Ask the user how many generations to show.
              board = newBoard(board);
              showBoard(board);
         //This method randomly populates rows 5-9 of the board
         //Rewrite this method to allow the user to populate the board by entering the
         //coordinates of the live cells.  If the user requests that cell 1, 1 be alive,
         //your program should make cell 0,0 alive.
         public static void fillBoard(boolean[][] board)
              int row, col, isAlive;
              Random picker = new Random();
              for(row = 4; row < 9; row++)
                   for(col = 4; col < 9; col++)
                        if (picker.nextInt(2) == 0)
                          board[row][col] = false;
                        else
                          board[row][col] = true;
         //This method displays the board
         public static void showBoard(boolean[][] board)
              int row, col;
              System.out.println();
              for(row=0; row < x; row++)
                   for(col=0; col<y; col++)
                        if (board[row][col])
                             System.out.print("X");
                        else
                             System.out.print(".");
                   System.out.println();
              System.out.println();
         //This method creates the next generation and returns the new population
         public static boolean[][] newBoard(boolean[][] board)
              int row;
              int col;
              int neighbors;
              boolean[][] newBoard = new boolean[board.length][board[0].length];
              makeDead(newBoard);
              for(row = 1; row < board.length-1; row++)
                   for(col = 1; col < board[row].length-1; col++)
                        neighbors = countNeighbors(row, col, board);
                        //make this work with one less if
                        if (neighbors < 2)
                             newBoard[row][col]=false;
                        else if (neighbors > 3)
                             newBoard[row][col] = false;
                        else if (neighbors == 2)
                             newBoard[row][col]= board[row][col];
                        else
                             newBoard[row][col] = true;
              return newBoard;
         //This method counts the number of neighbors surrounding a cell.
         //It is given the current cell coordinates and the board
         public static int countNeighbors(int thisRow, int thisCol, boolean[][] board)
              int count = 0;
              int row, col;
              for (row = thisRow - 1; row < thisRow + 2; row++)
                   for(col = thisCol - 1; col < thisCol + 2; col++)
                     if (board[row][col])
                          count++;
              if (board[thisRow][thisCol])
                   count--;
              return count;
         //This method makes each cell in a board "dead."
         public static void makeDead(boolean[][] board)
              int row, col;
              for(row = 0; row < board.length; row++)
                   for(col = 0; col < board[row].length; col++)
                        board[row][col] = false;
    }

    this is what im workin with mabey you can point me in the right directionimport java.util.Random;
    /* This class creates an application to simulate John Conway's Life game.
    * Output is sent to the System.out object.
    * The rules for the Life game are as follows...
    * Your final version of the program should explain the game and its use
    * to the user.
    public class Life
         public static void main(String[] args)
              //Allow the user to specify the board size
              boolean[][] board = new boolean[10][10];
              fillBoard(board);
              showBoard(board);
              //Ask the user how many generations to show.
              board = newBoard(board);
              showBoard(board);
         //This method randomly populates rows 5-9 of the board
         //Rewrite this method to allow the user to populate the board by entering the
         //coordinates of the live cells.  If the user requests that cell 1, 1 be alive,
         //your program should make cell 0,0 alive.
         public static void fillBoard(boolean[][] board)
              int row, col, isAlive;
              Random picker = new Random();
              for(row = 4; row < 9; row++)
                   for(col = 4; col < 9; col++)
                        if (picker.nextInt(2) == 0)
                          board[row][col] = false;
                        else
                          board[row][col] = true;
         //This method displays the board
         public static void showBoard(boolean[][] board)
              int row, col;
              System.out.println();
              for(row=0; row < 10; row++)
                   for(col=0; col<10; col++)
                        if (board[row][col])
                             System.out.print("X");
                        else
                             System.out.print(".");
                   System.out.println();
              System.out.println();
         //This method creates the next generation and returns the new population
         public static boolean[][] newBoard(boolean[][] board)
              int row;
              int col;
              int neighbors;
              boolean[][] newBoard = new boolean[board.length][board[0].length];
              makeDead(newBoard);
              for(row = 1; row < board.length-1; row++)
                   for(col = 1; col < board[row].length-1; col++)
                        neighbors = countNeighbors(row, col, board);
                        //make this work with one less if
                        if (neighbors < 2)
                             newBoard[row][col]=false;
                        else if (neighbors > 3)
                             newBoard[row][col] = false;
                        else if (neighbors == 2)
                             newBoard[row][col]= board[row][col];
                        else
                             newBoard[row][col] = true;
              return newBoard;
         //This method counts the number of neighbors surrounding a cell.
         //It is given the current cell coordinates and the board
         public static int countNeighbors(int thisRow, int thisCol, boolean[][] board)
              int count = 0;
              int row, col;
              for (row = thisRow - 1; row < thisRow + 2; row++)
                   for(col = thisCol - 1; col < thisCol + 2; col++)
                     if (board[row][col])
                          count++;
              if (board[thisRow][thisCol])
                   count--;
              return count;
         //This method makes each cell in a board "dead."
         public static void makeDead(boolean[][] board)
              int row, col;
              for(row = 0; row < board.length; row++)
                   for(col = 0; col < board[row].length; col++)
                        board[row][col] = false;
    }

  • Error: "Could not resolve [public class] to a component implementation

    Here's another clueless newbie question! :-(
    I define a public class "DynamicTextArea" at the top of the file, and get the compiler error message "Could not resolve <DynamicTextArea> to a component implementation" at the bottom of the same file.
    Clearly, I don't understand something very basic.
    (The code between the commenrted asterisks was originally in a separate package file, which I couldn't get either mxmlc or FlexBuilder to find, so rather than fight that issue now, I moved it into the same file.)
    Here's the file:
    <?xml version="1.0" encoding="utf-8" ?>
    <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
    >
    <!--****************************************************************-->
        <mx:Script>
        <![CDATA[
      import flash.events.Event;
      import mx.controls.TextArea;
    public class DynamicTextArea extends TextArea{
        public function DynamicTextArea(){
          super();
          super.horizontalScrollPolicy = "off";
          super.verticalScrollPolicy = "off";
          this.addEventListener(Event.CHANGE, adjustHeightHandler);
        private function adjustHeightHandler(event:Event):void{
          trace("textField.getLineMetrics(0).height: " + textField.getLineMetrics(0).height);
          if(height <= textField.textHeight + textField.getLineMetrics(0).height){
            height = textField.textHeight;    
            validateNow();
        override public function set text(val:String):void{
          textField.text = val;
          validateNow();
          height = textField.textHeight;
          validateNow();
        override public function set htmlText(val:String):void{
          textField.htmlText = val;
          validateNow();
          height = textField.textHeight;
          validateNow();
        override public function set height(value:Number):void{
          if(textField == null){
            if(height <= value){
              super.height = value;
          }else{      
            var currentHeight:uint = textField.textHeight + textField.getLineMetrics(0).height;
            if (currentHeight<= super.maxHeight){
              if(textField.textHeight != textField.getLineMetrics(0).height){
                super.height = currentHeight;
            }else{
                super.height = super.maxHeight;        
        override public function get text():String{
            return textField.text;
        override public function get htmlText():String{
            return textField.htmlText;
        override public function set maxHeight(value:Number):void{
          super.maxHeight = value;
        ]]>
      </mx:Script>
    <!--****************************************************************-->
         <mx:Script>
        <![CDATA[
          import mx.controls.Alert;
          private var str:String = "This text will be long enough to trigger " +
            "the TextArea to increase its height.";
          private var htmlStr:String = "This <b>text</b> will be <font color='#00FF00'>long enough</font> to trigger " +
            "the TextArea to increase its height.";
          private function setLargeText():void{
            txt1.text = str;
            txt2.text = str;
            txt3.text = str;
            txt4.text = str;
            txt5.htmlText = htmlStr;
            txt6.htmlText = htmlStr;
            txt7.htmlText = htmlStr;
            txt8.htmlText = htmlStr;
        ]]>
      </mx:Script>
      <DynamicTextArea id="txt1" width="300" height="14"/>
      <DynamicTextArea id="txt2" width="300" height="20"/>
      <DynamicTextArea id="txt3" width="300" height="28"/>
      <DynamicTextArea id="txt4" width="300" height="50"/>
      <DynamicTextArea id="txt5" width="300" height="14"/>
      <DynamicTextArea id="txt6" width="300" height="20"/>
      <DynamicTextArea id="txt7" width="300" height="28"/>
      <DynamicTextArea id="txt8" width="300" height="50"/>
      <mx:Button label="Set Large Text" click="setLargeText();"/>
    </mx:Application>
         Thanks for any insight you can provide!
    Harvey

    Gordon:
        As you've noted, there were multiple  misunderstandings.
        Some are due to references in the language which are  different from uses in pre-existing languages.
        Take "name spaces". They look like URLs but they're  not. One of the first errors I made when starting Flex was to try to browse to  http://www.adobe.com/2006/mxml. I  figured that it would have some description of the language. But it didn't. In  spite of LOOKING like a URL, it doesn't point to anything; it's really just an  arbitrary magic incantation, like "Open Sesame".
        But, then when I wanted to use my OWN namespace, I  find that it's NOT arbitrary, and does have to point to something, but it's  still not a URL. The "AHA" moment was when Michael told me that "*" means "look  in this directory for a file with the name later named in an import statement,  but not named here". And if the file was in subfolder  "X" I'd have to use "X.*", while if it were a URL I'd use slash instead of  dot, but never an asterisk.
        When the language syntax is so contrary to the  expectations of people coming from a declarative language or web programming  background, I think it is important to explicitly address the differences and  disabuse them of their preconceptions. I think the same should apply to the ways  in which ActionScript differs from ECMAScript.
        Another problem adding to my confusion is the habit  of naming variables with the names of keywords but with capitalization changes.  Not only does that set readers up for subtle "gotchas", but makes it unclear  which names are truly arbitrary, and which are required by the  compiler.
    It might be a good idea to have a convention of an  identifiable format for user variables. Many authors use names like  myButton for that purpose.
        It would also be helpful if printed text could  simulate the syntax coloring of the better editors, or at least have more  in-source comments saying exactly what each line does. (Or both)
        Another aid to understanding would be to provide a  reference to the alternative (MXML or AS) way of doing anything, whenever you  demonstrate one of the ways.
        I find that the emphasis on using FlexBuilder  distracts from a sense of what is really going on behind the scenes. E,g.: If  FlexBuilder automatically sets up the folder structure, I don't learn to do it  myself. I like to work at the code level, so when something goes wrong I don't  have to worry about what level it went wrong at.
        Also, not everyone is willing to drop $600 or $250  BEFORE they've learned whether they even like Flex. Your tutorials are, by  definition, addressed to newcomers who may well not yet have committed to the  expense of FlexBuilder. So more emphasis on using mxmlc would be nice. It would  also be helpful to discuss how to use local servers, like Tomcat, during the  development stage.
        Thanks for asking my opinion. I'm afraid that my 40  years of programming experience may make it harder for me to adapt to this new  style of programming than it would be for a kid with a tabula rasa. But, it  looks like it'll be fun once I get over the hump!
    Harvey

  • Mapping Value Objects to Java Classes

    Hi All,
    I have one Java Class:
    public class MyBean {
        private ArrayList numbers;
    I have created one mapping value object for the same in Flex:
    package vo
        import mx.collections.ArrayCollection;
        [RemoteClass(alias="com.tcs.example.MyBean")]
        public class MyBean
            public function MyBean()
            public var numbers:ArrayCollection;
    but when I fetch the object using Remote Object, the returned object has "numbers" as null even though I'm returning from Java a filled ArrayList.
    Does any one know Why is it happening and what should I do for this.
    Thanks in advance

    Do you have getNumbers and setNumbers methods on your java bean?
    Try to activate the logs on blazeDS to see what's going on.

  • Public class or just simply class?

    As I continue my reading into various books there are some books which will have you add the access modifier public in front of your classname. Other books will just have you leave it out. I tried out a simple program that declared a class in a separate file and then the second file was the main class file with the main method.
    It didn't matter whether or not I removed the keyword public in front of the name of my class in the first file. The program compiled and ran just fine. So I'm doing some looking on the web trying to understand what the word public means when it's placed in front of your classname.
    According to Sun:
    A class may be declared with the modifier public, in which case that class is visible to all classes everywhere. If a class has no modifier (the default, also known as package-private), it is visible only within its own package (packages are named groups of related classes?you will learn about them in a later lesson.)
    I picked this up from some other source:
    Java provides a default specifier which is used when no access modifier is present. Any class, field, method or constructor that has no declared access modifier is accessible only by classes in the same package.
    So if I understand this correctly if I place the word public in front of my classname my class is visible to all classes and all packages?
    And if I don't place the word public in front of my classname then the class that I defined is only accessible only by other classes in the same package whatever that package happens to be?
    So if I wrote this:
    public class MyVehicle
    }Then if I imported a package called import.java.GiveMeSomePaintingTools;
    Then the classes contained in the GiveMeSomePaintingTools would have access to the MyVehicle class that I made?
    And if I just wrote this:
    class MyVehicle
    }Then the classes in the package GiveMeSomePaintingTools would not have access to the class I made?
    That's what I gather...
    Edited by: 357mag on Jun 3, 2010 5:53 AM

    357mag wrote:
    Then the classes in the package GiveMeSomePaintingTools would not have access to the class I made?The clue as to what access modifier to use for a class will often be in its name. Generally you write a class to do something. If what it does is something you want the whole world to be able to do, then use public; if it is only used by other classes of a package you've written, then use the default. The third one is protected: you use this when the class needs to be visible within a hierarchy (especially one that can be extended by anyone).
    As an example: [java.math.BigInteger|http://java.sun.com/javase/6/docs/api/java/math/BigInteger.html] is a class that allows you to store arbitrarily large integer values. Sun clearly felt that this was useful enough to allow anyone to have access to it, so it is public. However, it is defined as immutable: ie, once you've created a BigInteger object, you cannot change its value. This is not optimal for arithmetic, where you may have several operations to perform to get a result: If each of them is forced to create a new object, you could waste a lot of time (and space).
    So the designers created a class called MutableBigInteger which is used by the BigInteger class (and also by BigDecimal) to hold interim values for calculations. Since this class is only used by those classes, it is defined with the default modifier (which is why you've never seen it).
    HIH
    Winston

  • Assign value in a inner class

    Suppose, we have the following two classes.
    public class test{
    final trythis t;
    t = null;
    doMethod(t); // because of this, t has to be assigned a null value
    (new Thread(){public void run(){
        t = new trythis();  // t is assigned twice
      }}).start();
    class trythis{
    trythis(){
    t seems to have to be defined as final, but final instance cannot be set in the inner class.
    Does anyone know how to solve this problem?
    Thanks

    As the local variable has a lifetime of the executing method's
    duration, you must ensure the innerclass (which has a longer lifetime)
    has access to it by declaring it final.This is not quite exact. All this is due to the way inner classes are implemented. An inner class maintains the contents of the outer local variables used in two ways:
    - If it is primitive, use the value verbatim (so the class has no relationship to the outer variable, it just uses the same number, so the local var needs to be final or else there could be surprises for a programmer who would think that changing the local var would also change the value used in the inner class)
    - If it is a reference, copy it as a class member, and use that one wherever needed. For similar reasons as above, the two references have to be in sync, so the local var has to be final (the inner var can't change anyway)
    This apply only to local variables because class members are accessible through a secret reference of the enclosing object passed in the constructor of the inner class. Static members are anyway accessible.
    <teacher's mode off/>
    <sorry for that, but someone might find the explanation useful :-)/>
    By the way, the OP can get the value "t" out of the inner class by providing a special Thread subclass, ie
    class MyThread extends Thread {
      public void run() {
        t = something;
      trythis t;
    MyThread thread = new MyThread();
    thread.start();
    thread.join();
    thread.t; //This is accessibleI'm not sure if this would be preferable to the array approach (which is ), but it is useful to know your alternatives

  • Public class ArrayEx extends Array

    Hi, I'm very bad at OO programming, but I'm trying to learn.
    I want to add some functions to my Arrays, like checking if
    arrays contain a value (indexOf can be equal to 0, which is false,
    though actually I'm used to the loose data typing of as2, so this
    may not be quite true. Bear with me though, I want to learn how to
    extend a class). So I'm trying to write a class that extends the
    basic Array class.
    I am confused about the constructor, I want to mimic the
    behaviour of the Array class but I'm not sure if I need to write
    functions for each method of Array. Since my ArrayEx extends the
    Array class it should inherit the array functions right? So it
    should already have .pop() and .push() ext. defined? How should I
    write my constructor to store the data the same way as the Array
    class does though?
    Is there somewhere I can look at the internal Array class to
    figure out how it does it?
    What I have written so far appears at the bottom of the
    message. I include questions as comments.
    I hope someone can help me out. I'm sorry if I'm asking stuff
    that seems obvious. Thanks for your time.
    Jon

    I've found the solution to my second set of problems and
    since I chose to trouble you all with the question I thought I'd
    post the answer.
    First problem, I had declared the ArrayEx class as dynamic
    but not as public. Should read;
    dynamic public class ArrayEx extends Array{
    Second problem. An empty constructor function, by default,
    calls the parent constructor function with no arguements. Since I
    wanted to construct my new array class like the default array class
    i had to add some code to handle that.
    So here is the working class;

  • One LIFNR, based on a function can send multiple values to traget.

    Dear SDNers,
    I need your help to solve this problem…
    Let me explain the situation.
    I have a field value “LIFNR”, which is sending a value from the source to target.
    Here by using a User Define Function based on parameters I have to map the exact target.
    The problem is:
    Currently I am having a function which is sending  a value to the target based on parameters and some times the target values are more that a single value. At that situation the function returns a random value to the target value.
    In the below Old Function there is a method used to execute only one value, if more than one values are there then it will select a random value from them and send that value to the destination.
    IFIdentifier src = XIVMFactory.newIdentifier(strContext, senderAgency, senderScheme);
    IFIdentifier dst = XIVMFactory.newIdentifier(strContext, receiverAgency , receiverScheme);
    String strResult = XIVMService.executeMapping(src, dst, a);
    Solution as in New Function,
    I have created a array to that particular destination variable and stored all value in array and passed to that target value. I have bold that letters.
    //here I run a loop to store multiple destination value
    if(receiverService.length>1)
    for(i=0;i<receiverService.length;i++)
    if (receiverService.equals("EM1CLNT003")||receiverService.equals("KM1CLNT003")||receiverService.equals("C11CLNT003")) receiverAgency<i> = "C11CLNT003";
    I am sending both the functions
    My question is is that LIFNR can send the multiple values to the detination for this change ?
    And also I want to know how to execute this program and transport and testing this UDF.
    Please need your inputs.
    Thanks
    Bala Prasad
    4. Old Function
    java.util.regex.Pattern;java.util.Vector;java.util.regex.Matcher;com.sap.aii.mapping.value.api.*;
    public String get_Value_Mapping_Table_V(String a,String scheme,String context,Container container){
    // PART1 : First we need to get the sender - and receiver service from the container object
    GlobalContainer globalContainer;
    String senderService = new String();
    String receiverService = new String();
    java.util.Map map;
    //Fill variables
    globalContainer = container.getGlobalContainer();
    map = globalContainer.getParameters();
    // Get the sender- and receiver service constants
    senderService = (String) map.get(
    StreamTransformationConstants.SENDER_SERVICE);
    receiverService = (String) map.get(
    StreamTransformationConstants.RECEIVER_SERVICE);
    // PART2: Now we need to find the correct value mapping table
    String strContext = context;                                //some context value
    String senderScheme = scheme;                                    //VendorNumber or VendorAccountGroup
    String receiverScheme = scheme;
    String receiverAgency = new String();
    if (receiverService.equals("EL1CLNT100")||receiverService.equals("KL1CLNT100")||receiverService.equals("PL1CLNT100")) receiverAgency = "PL1CLNT100";
    if (receiverService.equals("D01CLNT100")||receiverService.equals("T01CLNT100")||receiverService.equals("P01CLNT100")) receiverAgency = "P01CLNT100";
    if (receiverService.equals("EM1CLNT003")||receiverService.equals("KM1CLNT003")||receiverService.equals("C11CLNT003")) receiverAgency<i> = "C11CLNT003";
    String senderAgency =  "MEPCLNT100";
    IFIdentifier src = XIVMFactory.newIdentifier(strContext, senderAgency, senderScheme);
    IFIdentifier dst = XIVMFactory.newIdentifier(strContext, receiverAgency , receiverScheme);
                try {
                            String strResult = XIVMService.executeMapping(src, dst, a);
                            return strResult;
                } catch (ValueMappingException e) {
                            return a;
    5. New Function
    java.util.regex.Pattern;java.util.Vector;java.util.regex.Matcher;com.sap.aii.mapping.value.api.*;
    public String get_Value_Mapping_Table_N(String a,String scheme,String context,Container container){
    // PART1 : First we need to get the sender - and receiver service from the container object
    GlobalContainer globalContainer;
    String senderService = new String();
    String receiverService = new String();
    java.util.Map map;
    //Fill variables
    globalContainer = container.getGlobalContainer();
    map = globalContainer.getParameters();
    // Get the sender- and receiver service constants
    senderService = (String) map.get(
    StreamTransformationConstants.SENDER_SERVICE);
    receiverService = (String) map.get(
    StreamTransformationConstants.RECEIVER_SERVICE);
    // PART2: Now we need to find the correct value mapping table
    String strContext = context;                                //some context value
    String senderScheme = scheme;                                    //VendorNumber or VendorAccountGroup
    String receiverScheme = scheme;
    String receiverAgency[] = new String(); //here I changed into a array to store multiple value
    if (receiverService.equals("EL1CLNT100")||receiverService.equals("KL1CLNT100")||receiverService.equals("PL1CLNT100")) receiverAgency = "PL1CLNT100";
    if (receiverService.equals("D01CLNT100")||receiverService.equals("T01CLNT100")||receiverService.equals("P01CLNT100")) receiverAgency = "P01CLNT100";
    //here I run a loop to store multiple destination value
    if(receiverService.length>1)
    for(i=0;i<receiverService.length;i++)
    if (receiverService.equals("EM1CLNT003")||receiverService.equals("KM1CLNT003")||receiverService.equals("C11CLNT003")) receiverAgency<i> = "C11CLNT003";
    }String senderAgency =  "MEPCLNT100";
    IFRequest src = XIVMFactory.newIFRequest(strContext,senderAgency,senderScheme);
    IFRequest dst = XIVMFactory.newIFRequest(strContext,receiverAgency,receiverScheme);
                try {
                            String strResult = XIVMService.executeMapping(src, dst, a);
                            return strResult;
                } catch (ValueMappingException e) {
                            return a;

    Janaki,
    "and it did not work."
    That's useless information.
    When asking for help with a technical question here, you need to describe exactly what you did, showing all code, explaining the entire context in which the code is used, and showing all error messages and actual results along with a description of the expected results.
    One thing though, if this example is based on the standard EMP table, why does "depno" have no "t" in it in all your references?
    Scott

  • Sending a value associated with a checkbox across a client/server connectio

    Hello everyone,
    I've been working on a coursework for uni which simulates a very simple pizza ordering system. I've built the GUI and got the prices to calculate in a single applet. I'm now required to advance my application to perform a client/server connection, and to to my limited knowledge of java, have stumped myself! Please can someone help. I need to take the value of the 5 chech boxes in the client GUI and pass them to the server, which needs to calculate the total and pass it back to the client to show in a text box. My code thus far is:
    //client
    import java.applet.Applet;
    import java.awt.event.*;
    import java.awt.*;
    import java.io.*;
    import java.net.*;
    public class A3ClientClass_1 extends A4 {
         CheckboxGroup z;
         Checkbox tpizza, mpizza, ppizza, prpizza;
         Checkbox tomato, pepper, cheese, pepperoni, mushroom;
         String a = "";
         String b = "";
         TextField size, toppings, cost;
         double c;
    Scrollbar xAxis, yAxis;
    ScrollablePanel p;
    public void init() {
              setBackground(Color.orange);
    setLayout(new BorderLayout());
              Panel north = new Panel();
              north.add(new Label("SELECT THE PIZZA YOU WANT"));
              add(north, BorderLayout.NORTH);
              Panel outside = new Panel();
              outside.setBackground(Color.orange);
              z = new CheckboxGroup();
              tpizza = new Checkbox("Tomato Pizza", z, false);
              outside.add(tpizza);
              tpizza.addItemListener(this);
              mpizza = new Checkbox("Mushroom Pizza", z, false);
              outside.add(mpizza);
              mpizza.addItemListener(this);
              ppizza = new Checkbox("Pepper Pizza", z, false);
              outside.add(ppizza);
              ppizza.addItemListener(this);
              prpizza = new Checkbox("Pepperoni Pizza", z, false);
              outside.add(prpizza);
              prpizza.addItemListener(this);
              tomato = new Checkbox(" Tomatoes ");
              outside.add(tomato);
              tomato.addItemListener(this);
              pepper = new Checkbox(" Peppers ");
              outside.add(pepper);
              pepper.addItemListener(this);
              cheese = new Checkbox(" Cheese ");
              outside.add(cheese);
              cheese.addItemListener(this);
              pepperoni = new Checkbox(" Pepperoni ");
              outside.add(pepperoni);
              pepperoni.addItemListener(this);
              mushroom = new Checkbox(" Mushrooms");
              outside.add(mushroom);
              mushroom.addItemListener(this);
              size = new TextField(40);
              toppings = new TextField(40);
              cost = new TextField(40);
              outside.add(size);
              outside.add(toppings);
              outside.add(cost);
              tomato.disable();
              cheese.disable();
              pepper.disable();
              pepperoni.disable();
              mushroom.disable();
    p = new ScrollablePanel(outside);
    xAxis = new Scrollbar(Scrollbar.HORIZONTAL, 0, 50, 0, 100);
    yAxis = new Scrollbar(Scrollbar.VERTICAL, 0, 50, 0, 100);
    add("Center", p);
    add("East", yAxis);
    add("South", xAxis);
    public boolean handleEvent(Event e) {
    if (e.target instanceof Scrollbar) {
    p.transxy(xAxis.getValue(), yAxis.getValue());
    return true;
    return super.handleEvent(e);
         public void itemStateChanged(ItemEvent e) {
              b = "";
              c = 0;
              if (tpizza.getState() == true) {
                   a = tpizza.getLabel();
                   c = c + 3.00;
                   tomato.setState(true);
                   cheese.setState(true);
                   pepper.setState(false);
                   pepperoni.setState(false);
                   mushroom.setState(false);
              else if (mpizza.getState() == true) {
                   a = mpizza.getLabel();
                   c = c + 3.50;
                   tomato.setState(false);
                   cheese.setState(false);
                   pepper.setState(false);
                   pepperoni.setState(false);
                   mushroom.setState(true);
              else if (ppizza.getState() == true) {
                   a = ppizza.getLabel();
                   c = c + 4.00;
                   tomato.setState(false);
                   cheese.setState(true);
                   pepper.setState(true);
                   pepperoni.setState(false);
                   mushroom.setState(false);
              else if (prpizza.getState() == true) {
                   a = prpizza.getLabel();
                   c = c + 5.00;
                   tomato.setState(false);
                   cheese.setState(true);
                   pepper.setState(false);
                   pepperoni.setState(true);
                   mushroom.setState(false);
              if (tomato.getState() == true) {
                   b = b + tomato.getLabel() + " ";
                   c = c + 0.25;
              if (pepper.getState() == true) {
                   b = b + pepper.getLabel() + " ";
                   c = c + 0.5;
              if (cheese.getState() == true) {
                   b = b + cheese.getLabel() + " ";
                   c = c + 0.5;
              if (pepperoni.getState() == true) {
                   b = b + pepperoni.getLabel() + " ";
                   c = c + 1.0;
              if (mushroom.getState() == true) {
                   b = b + mushroom.getLabel() + " ";
                   c = c + 0.5;
              size.setText("Pizza Type: " + a);
              toppings.setText("Toppings: " + b);
              cost.setText("Total: �" + c);
         try{
                   Socket cts = new Socket(InetAddress.getLocalHost(), 6000);
                   DataInputStream isfs = new DataInputStream(cts.getInputStream());
                   DataOutputStream osts = new DataOutputStream(cts.getOutputStream());
                   while(true) {
                        //code here
              catch (IOException e) {
                        System.out.println(e);
    class ScrollablePanel extends Panel {
    int transx = 0;
    int transy = 0;
    Panel outside;
    public ScrollablePanel(Panel p) {
         setLayout(new BorderLayout());
         outside = p;
         add(outside);
    public void transxy(int x, int y) {
    transx = -x;
    transy = -y;
         outside.move(transx, transy);
    //Server
    import java.io.*;
    import java.net.*;
    public class A3ServerClass_1 {
         public static void main(String[] args) {
              try
                   ServerSocket ss = new ServerSocket(6000);
                   Socket ssconnect = ss.accept();
                   DataInputStream isfc = new DataInputStream(ctc.getInputStream());
                   DataOutputStream ostc = new DataOutputStream(ctc.getOutputStream());
                   while(true) {
    //code here
              catch (IOException e) {
                   System.out.println(e);
    Thanks

    Can't help ya there, I've never done socket programming. However, it comes up on these forums all the time. Try searching for some keywords about your problem.

  • Why can we have only one public class in our program

    Why is it that we can specify only one class as public in our source code .................................................
    Once i'd put one inner class as public ...which means now i have 2 public classes ..............out of which one is the inner class...what is the use of such public class which can be accessed by only its outer class.........
    plz. help

    Once i'd put one inner class as public ...which means
    now i have 2 public classes ..............out of
    which one is the inner class...what is the use of
    such public class which can be accessed by only its
    outer class.........
    plz. helpWrong.
    Public inner class can certainly be accessed outside.
    You just have to preface it with the name of the outer class.
    A.java
    =====
    public class A {
       AA example = new AA();
       public class AA {
           public int value() { return 5; }
    }B.java
    =====
    public class B {
       public static void main(String[] args) {
          A x = new A ();
          A.AA y = x.example;
          System.out.println(y.value());
    }

  • Using value variables throw public functions

    He all!!
    I'm trying to use value variables throw public functions in
    the same class.
    Is there any possible to do it?
    I'll explain:
    What i whant is in tha FLA file to get the songName of the
    mp3 like trace(musica.nomeMusica);
    quote:
    //AS Code
    package Mp3Player{
    import flash.media.Sound;
    import flash.media.SoundLoaderContext;
    import flash.media.SoundChannel;
    import flash.media.ID3Info;
    import flash.net.URLRequest;
    import flash.events.Event;
    public class Mp3Player {
    private var sound:Sound;
    private var req:URLRequest;
    private var context:SoundLoaderContext;
    private var channel:SoundChannel;
    private var id3:ID3Info;
    private var nomeMusica:String;
    public function tocarMusica(file) {
    sound=new Sound ;
    req=new URLRequest(file);
    context=new SoundLoaderContext(8000,true);
    sound.load(req,context);
    channel=sound.play();
    trace("A tocar");
    sound.addEventListener(Event.ID3,id3Info);
    public function id3Info(event:Event):void {
    id3=event.target.id3;
    nomeMusica=id3.songName;
    public function get getNome():String {
    return nomeMusica;
    //FLA Code
    import Mp3Player.Mp3Player;
    var musica:Mp3Player = new Mp3Player();
    var nome:String = musica.getNome;
    musica.tocarMusica("Saia_Indiscreta.mp3");
    trace(nome);
    The trace of my code is:
    quote:
    A tocar
    Null
    What i'm doing wrong or is missing?

    Tnks all for the reply but none of them give me any answer :(
    Making the question in other way.
    Using the code above, how can i set a funcion to call the
    musicaNome value from FLA file?
    quote:
    //AS Code
    package Mp3Player{
    import flash.media.Sound;
    import flash.media.SoundLoaderContext;
    import flash.media.SoundChannel;
    import flash.media.ID3Info;
    import flash.net.URLRequest;
    import flash.events.Event;
    public class Mp3Player {
    private var sound:Sound;
    private var req:URLRequest;
    private var context:SoundLoaderContext;
    private var channel:SoundChannel;
    private var id3:ID3Info;
    private var nomeMusica:String;
    public function tocarMusica(file) {
    sound=new Sound ;
    req=new URLRequest(file);
    context=new SoundLoaderContext(8000,true);
    sound.load(req,context);
    channel=sound.play();
    trace("A tocar");
    sound.addEventListener(Event.ID3,id3Info);
    public function id3Info(event:Event):void {
    id3=event.target.id3;
    nomeMusica=id3.songName;

  • How to get maximal value from the data/class for show in Map legend

    I make WAD report that using Map Web Item.
    I devide to four (4) classes for legend (Generate_Breaks).
    I want to change default value for the class by javascript and for this,
    I need to get maximal value from the class.
    How to get maximal value from the data/class.
    please give me solution for my problem.
    Many Thx
    Eddy Utomo

    use this to get the following End_date
    <?following-sibling::../END_DATE?>
    Try this
    <?for-each:/ROOT/ROW?>
    ==================
    Current StartDate <?START_DATE?>
    Current End Date <?END_DATE?>
    Next Start Date <?following-sibling::ROW/END_DATE?>
    Previous End Date <?preceding-sibling::ROW[1]/END_DATE?>
    ================
    <?end for-each?>
    o/p
    ==================
    Current StartDate 01-01-1980
    Current End Date 01-01-1988
    Next Start Date 01-01-1990
    Previous End Date
    ================
    ==================
    Current StartDate 01-01-1988
    Current End Date 01-01-1990
    Next Start Date 01-01-2005
    Previous End Date 01-01-1988
    ================
    ==================
    Current StartDate 01-01-2000
    Current End Date 01-01-2005
    Next Start Date
    Previous End Date 01

Maybe you are looking for