Tagged Questions
0
votes
0answers
12 views
How to send mail with attachment in GWT?
I would like to know if there is a way to send an email with attachment file with GWT.
I managed to send a simple email without attachment, but I am having a problem when I try to add a file.
The ...
1
vote
1answer
15 views
JUEL: What is the difference between ${} and #{}
I have seen and used both, but always wondered what the difference between the two expressions
${foo.bar()}
and
#{foo.bar()}
is in juel.
Any clues? Its hard to google "$" and "#" ....
5
votes
1answer
30 views
What does stripped JARs (no bytecode for methods) mean?
I am trying hard to find the cause of a weird JSF error. To do this, I try to debug the source code inside javaee-web-api module where a NullPointerException is thrown during JSF rendering. But I am ...
0
votes
0answers
21 views
How is a session being created before my Spring interceptor is reached?
Client device clears all cookies (so, no JSESSIONID cookie exists on the client).
Client makes a request to Spring controller.
Spring Interceptor intercepts the request.
In the very first line of ...
0
votes
3answers
46 views
Ensure that type parameter is correct
I have create a class named Box which have one type parameter. It is declared like this:
public class Box<T> {...}
I have also created a table that contain these boxes and it have getters for ...
0
votes
1answer
47 views
What is wrong with this update query in java?
I am trying to make an update query in my managed bean. Here is the code:
try {
PreparedStatement checkDB1 = (PreparedStatement) con.prepareStatement("update pocket set balance=? where ...
0
votes
0answers
10 views
Why does the debugger not find the executed source code of javax.faces.component.UIViewRoot
I have a JSF 2 application. There is a NullPointerException in one page. The logs and stacktrace does not give any useful information. Therefore, I wanted to debug the exact location where the ...
0
votes
2answers
42 views
How to use not equal operator in java database query?
I am making a query in my managed bean. here is the code:
try {
PreparedStatement checkDB = (PreparedStatement) con.prepareStatement("SELECT * FROM boats where age= ? and color <> ?");
...
2
votes
3answers
47 views
How to verify a list of objects is empty?
I have a list of objects that need to check if its empty or not, but I all the followings returns nullpointer exception.
List <MyClass> mylist;
mylist.isEmpty
mylist.equal(null)
1
vote
1answer
51 views
How can I do injection inside a method body?
I have the following code:
class Foo {
@Resource(lookup=url)
private DataSource ds;
}
But the url is dynamic and will be loaded inside a method body:
class Bar {
public static void ...
4
votes
1answer
58 views
how to determine the time when you end a sentence during registration?
I wrote on my own a set of code to record what I say through a microphone.
I would like to understand the function that google uses for stopping this recording when there is "silence". For example if ...
0
votes
0answers
16 views
Running a JMS based java code on remote server
My code runs on a JMS server - SERVER1 with JBoss installed. This code initiates a Topic/Message based request to the JMS SERVER1 to kick start a job.
import java.util.Properties;
import ...
0
votes
0answers
40 views
Rest web service Java Vs C# [on hold]
So I am going to develop restful web services in one of the projects I am working on.
I am now confused between the different approaches I may use to develop my application.
Will using to develop ...
1
vote
1answer
32 views
Using URL pattern as /* in REST webservice?
<servlet-mapping>
<servlet-name>JAX-RS REST Servlet</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
for my
<servlet>
...
0
votes
1answer
32 views
need paging for large amount of json records [on hold]
I'm building a website (Java EE web application),
and some client actions returning large amount of records in JSON.
I need avoid returning all the data at once and provide paging, both for speed, ...
