Can't Retrieve Jtext Field Values From Another Frame

Mar 25, 2014

I am trying to retrieve jtext fields and combo box values from another frame and to put them in database but .getText() doesn't return anything ...

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try{
String sql = "select * from login where uid = ? and pass = ?";
pst = con.prepareStatement(sql);
pst.setString(1, jTextField1.getText());
pst.setString(2, jTextField2.getText());
rs = pst.executeQuery();
if(rs.next()){

[Code] .....

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import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class M_serverApp extends javax.swing.JFrame implements Runnable {

[Code] ....

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This works perfectly fine but turns out to be a real bottleneck, dropping the fps to a third of what it was. Is there any quicker way? All I'm after is speed, I don't even need to show it on the screen if the comparison is made "behind the scene".

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Jan 20, 2014

<html>
<body>
<form action="login">
Male:<input type ="radio" name ="sex" value="Male"> <br>
Female:<input type = "radio" name="sex" value="Female"> <br>
<input type="submit" value="Enter">

[Code] ....

when the see the result i just get a strange value as "ON" but I am not getting the required value ,I mean Male or Female.

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Nov 4, 2014

I am creating a shopping list, with each element and object called product from the Item attribute class. Each product object has a description, price, and priority. From user input, I am able to create each product object, and then .add to my arraylist. I know that it successfully adds because I have it printed in each iteration of the do-while loop. Once the user indicates they want to quit, the loop ends. I then want to print each description, price, and quantity but this for loop will only print the last element over and over. Here is what I have:

ArrayList <ItemAttribute> list = new ArrayList<ItemAttribute>();
Scanner keyboard = new Scanner(System.in);
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/**
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[code]...

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Apr 25, 2014

Ok I am trying to auto populate a bean and retrieve the values from it using the jsp:useBean tags ect..

My code looks like this..

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String redirect = request.getParameter("page").trim();
if(redirect.equals("create_account"))
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if(redirect.equals("confirm_info"))

[Code] ....

The error my Apache Tomcat is throwing

org.apache.jasper.JasperException: An exception occurred processing JSP page /sign_on_server_pages/confirm_info.jsp at line 91

88:
89:
90: %>
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[Code] ....

I have tried sever different values for the scope attribute and all of them say the same thing about 'not found in scope'.

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Dec 12, 2014

I have a PDF file and I have a text file that contains this data. It has the name of a PDF field along with a database table column name.

Text file: pdfFieldEmployee=Employee; pdfFieldStartDate=StartDate; pdfFieldSalary=Salary; pdfFieldExempt=Exempt

I also have this hash map that contains the database table column names along with their corresponding values:

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Exempt, N

How would I read through the text file and the hash map and at the same time do this:

if the pdf field is equal to pdfFieldEmployee, then set pdfFieldEmployee equal to Don Parker.
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and so on and so on. I would prefer to do this with a loop because I think it would take less code than writing a bunch of if statements.

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Nov 28, 2014

I'm new to Java and I'm trying to pass several values from one frame to another. I've searched around and most codes I've come across are from auto generated GUI code. This what I've been trying to do

Frame1

private class SubmitButtonListener implements ActionListener {
public void actionPerformed (ActionEvent e) {
Frame2 f2 = new Frame2();
//call setValue from Frame2
f2.setValue(4.0);
f2.setVisible(true);
}
}

Frame2

private double val;
public double getvalue()
{
return val;
}
public void setValue(double v)

[code]...

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I am generating textfields dynamically using JSTL forEach. Here is the code ..

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<tr>
<td ><input name="underlyingTickers" type="text" id = "underlyingTickers" value="<c:out value='${underlyingTickers}' />">
</td>
</tr>
</c:forEach>

If there are 4 values in underlyingTickersList A, B C, D and E ... I am getting those values correctly displayed in each text field.

However if I submit the form with all these value how can I get it in the bean? I guess I need to have dynamic id or name for each text field. How can generate it?

Note** I dont have Struts framework.. I am using request.getParameter to fetch the values and set into the bean variable.

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Apr 11, 2014

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Oct 15, 2014

If my xml file (shown below as sample) has different employees with id's - is there a way I can get just the id's on there own?

Java Code:

<Employees>
<Employee id="1">
<age>29</age>
<name>Pankaj</name>
<gender>Male</gender>
<role>Java Developer</role>
</Employee>
<Employee id="2">
<age>35</age>
<name>Lisa</name>
<gender>Female</gender>
<role>CEO</role>
</Employee>
</Employees> mh_sh_highlight_all('java');

This is the code Im using - I know at the minute it gets the id details of id 3 but realistically I just want the id's and nothing else

Java Code:

private static String getEmployeeById(Document doc, XPath xpath, int id) {
String env = null;
try {
XPathExpression pathExpression =
xpath.compile("/Employees/Employee[@id=3]"); // line gets everything to do with id 3 but doesn't display the id

[code]....

Can this be achieved using xpath? I've been stuck on it for ages and I can't seem to really find anything to do with it

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Jan 9, 2015

I need to retrieve an image from the MySQL DB and display it in my JSP. The code below retrieves and displays the image with success. But, an exception is thrown:

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[java.lang.IllegalStateException: getOutputStream() has already been called for this response] with root cause
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[code]...

how can I resolve the cause with the getOutputStream() and prevent this exception to occur?

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String charAt() method returns a particular Character at the specified index in the String.

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Nov 25, 2014

I wish to retrieve just one value from db;
 
so I use this code:

@Transactional
    public long getSequenceSedeB(Long id) {
        BigDecimal seqValue = nu
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[Code] ....

But it do not works; this is the log.

type.NullableType (NullableType.java:182) - could not read column value from result set: ID; Invalid column name

2014-11-25 14:45:14,476 WARN  [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:77) - SQL Error: 17006, SQLState: null
2014-11-25 14:45:14,478 ERROR [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:78) - Invalid column name

 But in the database the query
 
SELECT MAX(ID) FROM SEDE_B_ALLEGATI_A WHERE ID_SEDE=:id
 
run correctly;
 
Also I need to rewrite the statement
   query.setParameter("id", 923);
in this way
   query.setParameter("id", AAA);
 
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<h4>Models For Selected Pattern:</h4>
</br>
<select Name="drop_model" multiple="true">
<%

try {
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[Code] ....

In this listbox some values are retrieved from database as

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public class TimeDetailBean {
private Time intime;
private Time outtime;
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So far, I've managed to retrieve the element where the consecutive 1s begin. However, I'm unsure how to get the index of this element and this implementation doesn't work if there is more than one set of consecutive 1s.

public class GetIndex {
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int index = 0;
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The HTML Tag :

<table style="margin: 0px; margin-top: 15px;">
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</td>
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The Servlet

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try {
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[code].....

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I am having an issue with retrieving "grouped" data from HTML form to servlet. I will describe the scenario below.

In companies, they record the salary of the employees once a month.When they record it, they do not do it by visiting each an every employees personal "profile" (or whatever according to the system). Instead what they do is apply the salaries of all of them in one page.

To do the above thing they prefer excel like tabular sheets. Now, I have a html form, where the form content is a table. One row is dedicated to a one employee.

Below is my form.

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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[Code] .....

As you can see, I have wrapped every row with a `<tbody>`. The `value` attribute of the `<tbody>` will contain the employee id. Once the form is submitted, the below servlet will capture it.

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

[Code] .....

What I was trying is get the `value` attribute of `<tbody>` (so I can identify the id of the employee) and get the data inside that `<tbody>`. However this didn't work, because I ended up with `NullpointerException` because it failed to read the `<tbody>` value.

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