JSF :: Reference Variable Passed To A File

Sep 30, 2014

How are methods invoked on the `bird` parameter?

next.xhtml:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">

[Code] ....

`MyQueueBean` is intended to give out a bird once only, to exactly one end-user. Because it's application scoped, and not session scoped, getting attributes directly from the bean would give inconsistent results.

The birds application is from Facelets Essentials Guide to JavaServer Faces View Definition Framework: [URL] ....

how is the variable passed to the file? Once it's passed, how is it referenced?

View Replies


ADVERTISEMENT

Reference Variable - Create Another Variable And Set It Equal To First

Jan 11, 2015

Given a reference variable : Car c1 = new Car();

when we create another variable and set it equal to the first : Car c2 = c1;

we're pointing c2 at the same car object that c1 points to (as opposed to pointing c2 at c1, which in turn points at the car). So if we have code like,

Car c1 = new Car();
Car[] cA = {c1, c1, c1, c1};

are we doing the same? Are we creating four *new* reference variables, each of which points at the same car (again as opposed to pointing them at c1 itself)? I think so, but want to make sure I'm understanding this correctly.

View Replies View Related

Process Of Calling Methods - Adjusting Variable Without Having It Passed Through Parameters

Feb 3, 2014

eg: "Sourdough".toUpperCase();

I guess this is actually a 2-part question:

- How does this work? (nothing seems to be passed through the parameter, so how is it that the value or variable is manipulated in this fashion?)

- How would I create a method that does something similar? (ie. adjusting a variable without having it passed through the parameters)

View Replies View Related

Servlets :: Making Attributes From Textboxes And Storing Latest Passed Variable?

Mar 12, 2015

I am trying to make the variables that will be taken in from a type='text' box in HTML in NetBeans available to the other servlets as well as store and display the latest value passed into these boxes on the servlet page when the submit button is clicked or display null if the box has not yet received a value. However, I do not understand how to do this and do not understand as to why my current output is always null?

i) Is ServletContext().getAttribute("name of my textbox") really the way to pass the attributes to all servlets?

ii) Is ServletContext() passed in the service request?

iii) How to store the latest value passed into the submit box?

Here is my code

index.html
<html>
<head>
<title>Lab One</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
First Name: <input type="text" name="firstName">

[code]....

View Replies View Related

Reference Variable Concepts

Feb 15, 2010

what these mean with examples..

1. A reference variable can be of only one type and once declared, that type can never be changed(although the object it references can change)

2. A reference is a varaible ,so it can be reassigned to other objects(unless the reference is declared final)

3. A reference variable's type determines the methods that can be invoked on the object the variable is referencing.

4. A reference variable can refer to any object of the same type as the declared reference , or - it can refer to any subtype of the declared type.

5. A reference variable can be declared as a class type or an interface type. If the variable is declared as an interface type, it can reference any object of any class that implements the interface.

View Replies View Related

Using This Reference Variable On Constructors - Involve Objects?

Apr 2, 2014

I am trying to simplify my constructor by using "this" reference variable. I am aware how to use this reference when making constructors that involve fields of primitive data types; however, not so sure fields involving objects. I have made the following constructors and haver placed a question mark in the last parameter. How I can use this reference that involves objects.

public class RetailItem
{
//Create the fiels for item.
//You need item name and item number. then you would need
//cost
private String description;
private int Item_Number;
private CostData cost;
 
[Code] ....

View Replies View Related

Servlets :: Form Containing Parameters Not Passed But File Uploaded

Sep 12, 2014

I have a webform on JSP page which has several parameters(strings and integers) values and a file to be uploaded to the server through a servlet. It is strange to see that i'm able to upload the file on to the server but not able to get the rest of the parameters in the servlet using request.getParameter("someString") .

<form method="POST" enctype="multipart/form-data" action="/cassino/uploadFile" >
<fieldset>
<div class="form-group">
<label >*ID riparazione</label>
<input type="text" name="idRiparazione" />

[Code] ....

View Replies View Related

Object Reference Variable Unwilling To Be Reset To A Different Object Type

Nov 6, 2014

I don't understand why the object reference variable 'a' cannot be recast from a thisA object reference to a thisB object reference.Is it the case that once a reference variable is linked to a particular object type then it cannot switch object types later on.I am facing the Java Associate Developer exam soon and I am just clearing up some issues in my head around object reference variable assignment,

class thisA {}
class thisB extends thisA { String testString = "test";}
public class CastQuestion2 {
public static void main(String[] args) {
thisA a = new thisA();
thisB b = new thisB();

[code]....

View Replies View Related

JSP :: How To Give Reference Of JavaScript And CSS File In Page

Aug 14, 2014

I have just started to work on Java EE and I am not able to put the refrence of css and javascript in jsp page.

My senario is below: I have created script file inside myJavaScript Folder like Web Container-> myJavaScript ->Home.js. Similarlly for css:Web Container-> myCss ->Home.css.

My Jsp page palced inside Like: Web Container-> Home ->Home.jsp.

How to give the reference of js and css file in my Home.jsp page.

View Replies View Related

JSP :: How To Access Variable Of Java File Into Page

Jul 4, 2014

I want to access variable of java file into jsp Page. So I tried to do this but it does not work.

Problem : when I am trying to access "getName" method of java class into jsp file it displaying error, i already imported "Ajaxmethod.java" file in to "success.jsp" I want to access "getName" method in to jsp file without creating object of class.

Ajaxmethod.java
package a.b;
public class Ajaxmethod implements Action{
public String name;
public String getName() {
return name;
}

[Code]...

View Replies View Related

JSP :: Sending Variable Set In Java Tag Library Definition To File

Jun 29, 2014

I am working on some enhancement on application. I have a requirement. The flow is as below

In a jsp file one selection dropdown exists and a body. Selection dropdown is written as custom tag library and is included in jsp file eg tag.tld whose code exists in tag.java code for other parts of jsp are written in that *.jsp file itself. eg test.jsp

i.e test.jsp calls tag.tld to include selection dropdown

I now want a hashmap created in tag.java to be available in jsp file and I want to use it in one of the javascript function available in same jsp file for validation

How can I achieve this....

View Replies View Related

Log File Parsing - Find A Value For Variable And Send To Database

Nov 29, 2014

I am new to java coding. so reading the log file using java code.

1) I wish to parse a file, and find a value for variable e.g. [StorageVersion].
2) After finding the value, it will be pushed to database.

Log File Path e.g. C:Temp est.txt"

Sample Logs :
{
//NAME
[1.2.2917] := s['3.4.454545'];

//Parameter
[1.2.2947] := s['1.2.56778'];

//Enabled
[1.2.3910] := B['22.43434.12232'];

//MAXCLOUMNNAME
[1.2.4217] := N['1.7.899982'];

//StorageVersion
[1.2.2917] := K['706146.0.22106932'];
}

From above log file, the Value i need is "706146.0.22106932"

View Replies View Related

String Not Being Passed Into Method?

Oct 20, 2014

The only problem I am having is I cannot get my string plainText to go through the encode and prepareString methods.

Is there something in my methods that is wrong, or is it the way that I am calling them?

What is happening is if I enter "this is a test" as a plainText I am getting the samething back with no changes.

View Replies View Related

Values Are Not Being Passed To Array

Sep 29, 2014

I have this class:

package model;
import java.awt.Color;
import shapes.Oval;
import shapes.Rectangle;
import shapes.Shape;
import java.awt.Container;
import java.lang.reflect.Array;

[Code] .....

And as it is now, the values are not being passed into the shapeArray array. If I "hard code" two shapes into the array in this class, everything works fine later on, but I do not manage to pass values into the array from the createShape() method. I tried several approaches, nothing works.

View Replies View Related

Changing Variables That Are Passed In?

Apr 11, 2014

I'm having some trouble figuring out how to change the value of a variable that is passed into a class. I've tried just changing the variable, I've tried changing it by using the this.variable command, and I've even tried calling the setter class from within the class to change it, but it's still not working right. The first class is the one with Main in it and I just feed it some dummy data:

public class ExamConverter {
public static void main(String[] args) {
// TODO Auto-generated method stub
Age testAge = new Age();
 
[Code] .....

This is the other class to calculate the age the way we do it on psych tests - it might not be mathematically accurate, but it's what all the tables and such for raw to scaled score conversion are based on, so the math needs to be the same as opposed to "accurate" because of some months having 30 or 31 days, etc.

public class Age {
//==================Properties==================
// Variables for the test date and client date of birth
private int TestMonth;
private int TestDay;
private int TestYear;
private int ClientMonth;
private int ClientDay;
private int ClientYear;
 
[Code] ......

Based on this dummy data, the output is:
Test: 5/4/2014
DOB: 5/5/1971
Age Years: 43 Months: 0 Days: 0

However, it should be:
Test: 5/4/2014
DOB: 5/5/1971
Age Years: 42 Months: 11 Days: 29

View Replies View Related

Objects Being Passed As Parameters

Aug 7, 2014

If I have a method that takes an ArrayList of a class called Piece and it uses the setPosition() method from Piece. It is changing the value of the array that I passed in, but I want the ArrayList to stay the same outside of the method. Is there any way I can change only the values on the inside of the method, but keep the same position values outside the method?Here is an example.

Piece class
Java Code: public class Piece {
private int xCoor;
private int yCoor;

[code]....

View Replies View Related

Alternative To Update Passed Arguments?

Apr 22, 2015

I am writing a simple program in Java, where I call a method and pass some variables (namely, min and max) as arguments. This method is recursive, so the same arguments are again passed on in each recursive call.

I need to update these variables in recursive calls so that when the calling method uses them, it uses updated values. As it might sound confusing, here is sample code :

// Function 1.
void func1() {
//Call func2.
func2 (int hd, int min, int max, Map<String, String> map);
//Other stuff.
}
// Function 2.

[code]....

As you can see, min and max are updated after each recursive call returns, based on conditions. However, these changes aren't reflected in original min and max, which were used by func1 while calling func2. As far as I know, this happens due to call by value mechanism being used by Java while passing arguments. If I declare min and max as instance variables in the class, my problem is solved. But, I want to know whether there's any other way to update these variables so that changes in original min and max are reflected. Yes, I can return them as an array of 2 elements each time while returning, but it didn't seem a good solution to me.

View Replies View Related

Servlets :: Big Form Data Passed

May 29, 2014

I have an html form with 200 input fields of type text. The first input field contains the name of a book author and the remaining 199 fields hold each a title of a book that he or she has written. I also have a servlet that processes the form data and sends it to a file. The entered data is restricted to a combination of the characters "a...z A...Z". how do i go about with creating my html page. The input fields are just too many, how to retrieve the 200 values in servlet.

<html>
<head>
<script>
var k;
function testField(Expression){
k=1;
var str1="abcdefghijklmnopqrstuvwxyz ";
var sor=Expression;

[code]....

View Replies View Related

How To Call On Arraylist That Is Passed In By A Method

Oct 11, 2014

my arraylist is declared in my main method. A string that i will be calling on is declared in my main method as well. The arraylist and string is passed to a method outside the main. I am to search for the beginning of a string and end of the string, remove those items. Then i am to pass the string with the removed items to arraylist that is called in my main with an enhanced for loop. The for loop then displays what is needed from the string and the method i created. I will posting an example of my main and method that is used in my program.

public class ExampleUrl {
public static void main(String[] args) throws MalformedURLException, IOException {
ArrayList<String> urlList = new ArrayList();
String url = "";

[Code].....

View Replies View Related

How Does Scanner Goes Through String Which Is Passed To It As Parameter

Feb 7, 2015

How does the Scanner goes through the String which is passed to it as a parameter. For example, String input = "222 dddd 222 ddd22" is passed to the method and here's the code:

Java Code:

public static void sum(String anything)
{
Scanner input = new Scanner(anything)
while(input.hasNext())
{
if(input.hasNextDouble())
{
double nextNumber = inut.nextDouble();
sum += nextNumber
}
......
......
} mh_sh_highlight_all('java');
{

So, how does Scanner calculates a passed String? I just want to know the way it calculates/reads.

View Replies View Related

Any Limit On How Many Parameters Can Be Passed With PreparedStatement?

Mar 31, 2014

I tried to Google, but was not able to find anything relevant.

I have a sql query where in I am using preparedStatement which goes something like :

select * from test where parameters in ( ?,?,?,?,?,?,?,?,?,?,?,?,?);

Is there a limit on how many "?" characters i.e. parameters can be there in this query?

View Replies View Related

Perform Action Only If Certain Amount Of Time Has Passed

Sep 18, 2014

public static void main(String[] args) {
boolean t=false;
long cuTime = System.currentTimeMillis()
while(t==false) {
System.out.println(cuTime);
long g=cuTime+2000;

[Code] ....

I tried this and it includes a while loop as the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop

View Replies View Related

How To Perform Action Only If Certain Amount Of Time Passed

Sep 18, 2014

public static void main(String[] args) {
boolean t=false; 
long cuTime = System.currentTimeMillis();
while(t==false) {
System.out.println(cuTime);
long g=cuTime+2000;

[Code] ....

I tried this and it includes a while loop. therefor the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop...

View Replies View Related

How To Perform Action Only If Certain Amount Of Time Has Passed

Sep 18, 2014

public static void main(String[] args)
{
boolean t=false;
long cuTime = System.currentTimeMillis();
while(t==false)
{
System.out.println(cuTime);

[code].....

I tried this and it includes a while loop as the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop

View Replies View Related

Display Name Of All People In ArrayList Containing Passed In Keyword

Dec 8, 2014

i need to write a method, that passes in an arraylist and a keyword,and display the name of all the people in the arrayList whose name contain the keyword (irrespective of uppercase or lowercase). how to write such a method ??

View Replies View Related

Parse Value Of Array Of Object Passed Through A Parameter

Oct 29, 2014

I'm working on a method that would parse the value of the array of object that I passed through a parameter. I would like to ask if making Object as a parameter is doable. Let's say I have a class Student and Teacher. I created a class the would handle the sched and name it class Schedule and extend this class to the Student and Teacher. Now I want to have a function that will accept an array of Schedule from either Student and Teacher, what ever object I will pass in the parameter. I know its easy to just make a method with a separate parameter of my classes but im looking for a more dynamic code.

class Student extends Schedule{
//variables here for student
}
[code]

class Teacher extends Schedule{
//variables here for teacher
}
[/code]

private void parseObject(ArrayList<Object> objct){
Schedule temp = objct.get(0);
//there is no error in this part

}

Now when i will try to use the function and pass a data, it will not accept since my parameter should be an array of object. How would I twist dis one?

ArrayList<Student> temp_student = new Array....
parseObject(temp_student); // it will not accept my parameter, how would i make it as an object

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved