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]...
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Jan 15, 2014
I have a xhtml file that initialization it with ui:repeat tag in realtime.all tags of this page placed under ui:fragment tag.
<edges>
<ui:repeat value="#{graphInfoBean.edges}" var="edge" varStatus="indexVar">
<edge id="#{indexVar.index}" source="#{edge.source}" target="#{edge.target}"
weight="#{edge.weight}">
[Code] ....
When i access to this page and save it as xml in realtime, the tags in xml file saved is empty while it is initialized and everything is working properly.
<edges>
</edges>
How can i access to content of this xhtml page and save it on disk?
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Oct 30, 2014
I am getting an error as follows while trying to compile a java file for servlet:-
"error while writing BeerSelect: WEB-INFclassesBeerSelect.class (Access is denied)
public class BeerSelect extends HttpServlet
^
1 error"
I am using "C:Program FilesApache Software FoundationTomcat 8.0webappsBeerBottlejavac -d WEB-INFclasses BeerSelect.java" to compile the file.
I am using Windows 8.1
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Feb 3, 2014
Why is this not valid in java:
Both uses public with the same class/interface name.
Test.java:
public class Test implements Test{
/// Some codes
}
public interface Test {
///Some methods
}
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Jul 26, 2014
I'm trying to acces my variable "cost" so when i press a button it prints the cost(for now) but the int value just prints 0
public class Holiday extends JFrame
{
private RoutinePanel routine; // A panel for routine charge checkboxes
private JPanel HolidayPanel; // A panel for non-routine charges
[Code].....
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Jul 24, 2014
why I cant access a variable from another class, in particular why in the main class cant i assign " quiz1 = getQuizOne();" ? It constantly giving me error.
Java Code:
import java.util.Scanner;
public class Grade {
private int quiz1, quiz2, midtermExam, finalExam = 0;
public static void main(String[] args)
{
Student John = new Student();
John.StudentData();
[code]....
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May 23, 2015
Java Code:
public class MountainBike extends Bicycle {
// the MountainBike subclass has
// one field
public int seatHeight;
// the MountainBike subclass has
// one constructor
public MountainBike(int startHeight, int startCadence,
[Code] ....
At first,
Java Code: public int seatHeight; mh_sh_highlight_all('java');
tells us that seatHeight is NOT a static field (because of the absence of static keyword).
Whereas in the constructor, the absence of dot notation (like something like this.seatHeight) in
Java Code: seatHeight = newValue; mh_sh_highlight_all('java');
shows that it IS a non-member/static variable.
How does this make sense?
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Sep 12, 2012
I have a matrix int[][] and I want it to be accessible to all jsp files.
The code is:
int[][] matrix = methodThatGeneratesTheMatrix;
How can I access/use this matrix in all jsp files?
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Feb 19, 2014
how to get an access to the method with a parameter of class type variable, lets say: public void insert(Record newRecord, int pos)?
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Aug 2, 2014
// code for this file including sql query for 1st <c:forEach> tag which is working fine.
<table>
<c:forEach items="${rs.rows}" var="data">
<tr>
<a href="res_pkey=${data.discount_PKey}#my-offers" data-toggle="modal">
<s:query var="rs2" sql="select * from discount where discount_id='${data.discount_PKey}' " ></s:query>
<c:forEach items="${rs2.rows}" var="data2">
[code]....
code is working fine, please check the red coloured lines in code above, here i want to send different value of res_pkey to my-offers according to the user selected row of the table, thats why i am using it in the anchor tag.previously i tried : <c:set> but it updates its value during loading of the page and set it to the last row's value.I want : when user select a row, only that perticular value should be given to tha my-offers
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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....
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Feb 20, 2015
I want to call a servlet variable in jsp page textfields.Actually in servlet I fetch a jasper report properties in servlet variables and then this variable call from jsp page and after changing properties values this report saved.my servlet code is:
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
JasperReport jasperReport=null;
Connection con=null;
JasperDesign jasperDesign=null;
[code].....
so how to fetch servlet variable from jsp page textfields on load page and after edit that values then again save this values in jasper report on save button.
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Apr 17, 2013
I have index.jsp in that page logout is available. while hitting the button . i want to invalidate all the session variable which i used. but it is not happening.
<html:image src="/x/images/logout1.png" onclick="logout()"> </html:image><script type="text/javascript">
function logout() {
document.forms[0].action = "/x/x.do?method=dologout";
document.forms[0].submit();
[Code] .....
Even when i logout. then i start from new session means., session values continues from previous session. not killed.
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Dec 8, 2014
I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...
The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data.
Here is the base Product class that must be used to create the objects for the array.
public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;
[Code] .....
And then here is the data from the text file that i must extract to use to create product objects.
Dill Seed,938,34
Mustard Seed,100,64
Coriander Powder,924,18
Turmeric,836,80
Cinnamon (Ground Korintje),951,10
Cinnamon (Ground) Xtra Hi Oil (2x),614,31
Cinnamon (Ground) High Oil (1X),682,19
These continue for about 40-50 entries, they are not separated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name separated with spaces, then price after a comma, then quantity after the second comma.....
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Dec 9, 2014
I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...
The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data. Here is the base Product class that must be used to create the objects for the array.
public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;
[Code]...
these continue for about 40-50 entries, they are not seperated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name seperated with spaces, then price after a comma, then quanity after the second comma.....
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Dec 8, 2014
I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...
The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data.
Here is the base Product class that must be used to create the objects for the array.
public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;
//Constructor
public Product( String pName, double price, int quanity )
[code]....
and then here is the data from the text file that i must extract to use to create product objects.
Dill Seed,938,34
Mustard Seed,100,64
Coriander Powder,924,18
Turmeric,836,80
Cinnamon (Ground Korintje),951,10
Cinnamon (Ground) Xtra Hi Oil (2x),614,31
Cinnamon (Ground) High Oil (1X),682,19
these continue for about 40-50 entries, they are not separated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name separated with spaces, then price after a comma, then quanity after the second comma.....
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Oct 26, 2014
I need to write a program that will create an inventory file as a random access file. The problem that I am having is that among the things I need to add to the random access file is a "car name". Since random access files are byte based I don't know how I could possibly write and then read a string value.
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Nov 12, 2014
I am trying to create a file browse option in my jsp and later after browsing, all i want to do is to read that file in my jsp without saving it into that database so that i can perform encryption for it and save that encrypted file later into my database. please provide reference link so that i can refer to some applications and and move ahead with my work.
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Apr 16, 2014
I'm getting an error on line 137 and all it is rsmd = rs.getMetaData();The error happens only after I press a JButton and it is
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerExceptionat softwareDesign.createAccount.actionPerformed(createAccount.java:137)
There is a lot more to it but that has nothing to do with my code it's just the stuff with Eclipse anyway I want to know how do I fix this problem?
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Nov 21, 2014
So let's say i have an executable jar and inside that jar is a bunch of files. How do I access files within my jar?
Assuming like, a main class is currently running and that is what's inside the manifest file as the main class inside that executable jar..
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Jan 30, 2015
I'm given a task to generate an API (a jar file) where the access of a certain database is provided through the API. basic functionality: Client sends a query through the API to server and the Server responds with data.Since its and API, do I have to implement the code or is it enough if i gave just interfaces? what are the OOP concepts to focus on when designing a good API.
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Aug 10, 2014
I am new to java. While compiling the "moooooo" program an error is displayed.
Error -- error while writing MooseGreetings :MooseGreetings.class
<access denied>.
What to do?
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Nov 3, 2014
I am having hard time to grasp the concept of java as i am beginner. according to different sources found in internet, only one class is written in one source file. and all those class can be accessed through the main class.
my question is
1.can we access one class present in one source file, through another class present in another source file [not through the class containing main method]?
2.can we create more than 1 class in same source file?is there special way to do it? i do get error always when i try to do so
3.can multiple classes contain main method? or should there be only single class containing it?
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Mar 7, 2015
I'm trying to access class file which is inside the package and package is inside the jar file but I can't access that class file inside my source file . All files are on desktop .
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Oct 15, 2014
I need to access Oracle database without using ODBC driver using DAO only, how to do that...
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Jul 10, 2014
I have a random access file stream. I have below code I want to written data that is currently pointed by pointer till the end and display that data on System.out Stream but it is not working my code is
//Create a Random Access File
java.io.RandomAccessFile random=new java.io.RandomAccessFile("D:/input.txt","rw");
//Position the pointer to a seek
try {
random.seek(300);
long pointer=random.getFilePointer();
System.out.println("Current Pointer is:"+pointer);
int a;
while((a=random.read())!=-1) {
System.out.println(a);
}
Where am I wrong? Although it is returning actual position of pointer in pointer using
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