JSP :: Passing Parameter To Imported File

May 14, 2014

I am trying to run an example in which I pass a parameter to imported file but its not working.

This is my header.jspf file which I will include in a jsp file.

<img >
<br>${param.sub}

And This is the JSP file contact.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<body>
<c:import url="header.jspf">
<c:param name="sub" value="We love to hear from our clients------------" />
</c:import>
<br><br>

Now this is JSP page content

</body>
</html>

When I hit the contact.jsp file , It does show me the image I have on header.jspf , but its not able to print the parameter that I am setting in <c:param>

So after showing image it just shows ${param.sub}. So EL is not translated properly.

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ASCII File - Passing Array As Parameter?

Feb 23, 2014

I am trying to make a class definition file for an ASCII File.

Ultimately, I want to be able to add methods to allow the image produced by the file to be printed normally, then printed with various manipulations.

However, for some reason, whenever I try to run the program to test my normalPrint method, it terminates without printing anything.

I think this is because the array's values width and height are not within the scope of the method. I tried passing the array as a parameter for the method like so:

Java Code:

public void normalPrint(char [][] poop){
//method here
} mh_sh_highlight_all('java');

But it gave me an error that stated

"The method normalPrint(char[][]) in the type asciiFile is not applicable for the arguments ()"

Class Definition:

Java Code:

import java.io.*;
import java.util.Scanner;
public class asciiFile {
int height;
int width;

[Code] .....

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Apr 30, 2014

I'm using Java in BlueJ where I'm trying to write a class to store cycling club membership details in a map. I'm trying to pass a map as a parameter to a function that will iterate over the map and print out the member details. My code is:

public class CtcMembers
{
//instance variables
private Map<String, Set<String>> memberMap;
/**
* Constructor for objects of class CtcMembers

[Code] ....

When I execute the following in the OU workspace:

CtcMembers c = new CtcMembers();
c.addCyclists();

I can see a map populated with the expected details.

When I execute the following in the OU workspace:

c.printMap(c.getMap());

I get the following error:

java.lang.ClassCastException: java.util.HashSet cannot be cast to java.lang.String
in CtcMembers.printMap(CtcMembers.java:81)
in (OUWorkspace:1)

I wasn't aware I was trying to cast anything so this has got me baffled.

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Aug 8, 2014

i want to pass an object of type Software to assign it to a computer from Computer class...

i should note that computer and software are arrays of objects thats the variable and method to set software in Computer class

private Software[] software;
public void setSoftware(Software software,int index){
this.software[index]=software;}

note: the user choses the a computer from a list and a software as will

for example the program will show the user 2 computers

0 for computer: apple, Model: mac mini, Speed: 2.8

1 for computer: sony, Model: vaio, Speed: 2.2

the user enters the index he wants then the program will show a list of software to add to the computer selected

the error I'm having is run time error Exception in thread "main" java.lang.NullPointerException and it points to these 2 lines

1.comp[Cch].setSoftware(software,Sch);

2. the method setSoftware

every thing is running correctly but this step above

Cch= the chosen computer index

Sch= the chosen Software index

why am i getting an error and how to fix it?

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Oct 15, 2014

I'm asking if there is a way to pass parameter between try/catch block.

I have a method:
 
public void invia(OiStorto invioaca) throws Exception {      
         Long id=0L;
        try {
               //some code
     for (VElenpere elenpere : elenperes) {

[Code] ...

The method called in the for:

private void popolaScompiute(Long anno, InviaEOI inviaEOI0, _4IntegerType param, ElOpeIncType opereIncompiute,
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        try {
          //some code
     for (OiOpera opere : oiOpere){
             
[Code] ....
   
And finally the method in which the error can occur (the method poputa is called for every id)
 
private void poputa(ElOpeIncType opereIncompiute, OpeIncType operaSingola, OiOpera opere) {
try {
//some code
} catch (NullPointerException e) {
            e.printStackTrace();
            //return id;
        }
       
So method invia call the method popolaScompiute, inside popolaScompiute there is an iteration through some id and for some id can occur an error; what i want is the getting the value of id in the first method invia, using the block try/catch. Is there a way to accomplish this?

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Jan 30, 2015

Java SE Runtime Environment build 1.8.0..This is part of the code:

public static int addAddress (String[] number, boolean[] front, double[] total) {
int num = 0;
double ffee = 0;
/*boolean value = false;*/
 
[code]...

I have tried using the line of code commented out, /*boolean value = false;*/. However, another error is displayed. The compiler shows the following...

Inspection.java:33: error: incompatible types: boolean cannot be converted to boolean[]
front[num]= defineFront(num, value);
^
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output error...I know that boolean values are by default stored as false, once you create the array. However, I'm having trouble passing the variable to the method.

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Mar 8, 2015

I have an object that has an instance of another object class as its parameter :

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This is for a locker, which has a combination assigned to the student. Within the locker class I have the following constructor:

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this.locker = locker;
this.combo = combo;
this.student = student;
this.numberOfBooks = numberOfBooks;
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combo is the private CombinationLocker object I created within the Locker class. Do I need to pass the combo object on to the CombinationLock class? For reason, I do not comprehend, the combination password from the main class is not passing through to the CombinationLock class, and the combination values are all zero.

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Feb 10, 2015

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import com.mycomanyA.*;
import com.mycomanyB.*;
public class Something{
public static void main(String ... args){
// code goes here...
}
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And the Something.java is inside the following structure...

A.jar
com/
mycompanyA/
A.class
Another.class
B.jar
com/
mycompanyB/
B.class
neededImage.gif
bin-folder/
org/
apache/
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To compile this code(Something.java) from command line I want to use the following command,

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Are my assumptions correct about how java find jar contents imported in a source file?

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JSP File

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Mar 4, 2014

Instructions

Create a WordCounter class with a constructor that takes a file name as a parameter

The class should have two fields: one for the file name and one for a HashMap to store word count information

The constructor should call a private method, countWords, that reads in the file and counts the word frequencies

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When printing, the map should be sorted by either the word order or frequency (Hint: see Collections.sort)

You should include the sample text file on Blackboard. This is what i got so far

Java Code:

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Scanner;
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[Code] ....

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Jun 18, 2014

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Apr 19, 2014

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for (int count=0; count<list.size(); count++) {
%>
<tr>
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[Code] ....

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[Code].....

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Mar 25, 2015

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Java Code:

public ArrayList <Customer> getMailingList(String keyword){
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return key;
} mh_sh_highlight_all('java');

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import javax.swing.*;
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