Is there a canonical site/book/article I could go to that discusses the hundred of existing Java Web Frameworks out there, and which objectively compares their strengths, features and weaknesses? Note that I am not asking which framework is the best. Others have already done so. I'm looking for a comparative review of the existing frame...
Suppose this is the xml: <lib> <books type="paperback" name="A" /> <books type="pdf" name="B" /> <books type="hardbound" name="A" /> </lib> What will be the xpath code to search for book of type="paperback" and name="A"? TIA. Currently my code looks like this: import org.w3c.dom.*; import javax.xml.xpath.*; import javax.xml.parse...
I tried to use the file upload using Apache Commons but the following exception thrown org.apache.commons.fileupload.FileUploadBase$InvalidContentTypeException: the request doesn't contain a multipart/form-data or multipart/mixed stream, content type header is null My html code is <form name="inp" action="upload.jsp" method="get" on...
Today I wanted to create my first annotation interface following this documentation and I got the compiler error "Invalid type for annotation member": public @interface MyAnnotation { Object myParameter; ^^^^^^ } Obviously Object cannot be used as type of an annotation member. Unfortunately I could not find any information on ...
For debugging purposes, I need to follow the execution of some piece of code, within a class. I would like to generate a log for all method calls, in XML, like : <call class='pack.age.MyClass' method='myMethod1'> <param name='param1'>param1.toString() value</param> ... <call>Call to other method within myMethod1; you get the...
Following is my helper class to get DB connection: I've used the C3P0 connection pooling as described here. public class DBConnection { private static DataSource dataSource; private static final String DRIVER_NAME; private static final String URL; private static final String UNAME; private static final String PWD; ...
Hi all, I have a pretty simple case where I do some basic generic assignment: final Detail detail = field.getAnnotation(Detail.class); final String example = detail.example(); final Class<?> type = field.getType(); if (List.class.isAssignableFrom(type)) ... else if (Enum.class.isAssignableFrom(type)) setValue(c...
I'm writing a method that forms part of the public interface of a Java class. It broadly allows the caller to specify the values to assign to a number of database entities - so they must supply both the IDs of the entities themselves, and the values to assign to them. I'm wavering between implementing this as a List<Pair<Integer, Integ...
I'm stuck with a regular expression problem. I've got a string which I need to match. The string always starts with 2 letters, and then is followed by a 6 digit number, e.g. EF123456 AB123456 However, there is one combination of letters which I need to ignore. e.g.: XX123456 So I want to write a regular expression to match only ...
Is there a way to get a text description of the currency represented by a Currency object in Java? i.e. I have AZM, I want Azerbaijan Manat ...
I am working on a program that acts as a launcher for other programs. It is possible that there could be 20+ windows displayed when started. I would like someway of specifying which workspace the program opens on, while it is already possible to start the program on a certain workspace, I need a list of the available workspaces in my lau...
I wrote an application for video recording which stores the recording to a file. Currently I am looking for a way to implement some kind of "listener" to listen for file changes. The concept I would like to implement is the following: Check the file on a set period of time (for example one second), extract changes (get the data that was ...
I would like to populate a java.swing JComboBox with values from an Enum. e.g. public enum Mood { HAPPY, SAD, AWESOME; } and have these three values populate a readonly JComboBox. Thanks! ...
I just read about zip bombs, i.e. zip files that contain very large amount of highly compressible data (00000000000000000...). When opened they fill the server's disk. How can I detect a zip file is a zip bomb before unzipping it? UPDATE Can you tell me how is this done in Python or Java? ...
I'm looking for any implementation of a pure Tree data structure for Java (that aren't graphical ones in java.awt), preferably generic. With a generic tree I'd like to add elements that are not supposed to be sorted and do something like this: TreeNode anotherNode = new TreeNode(); node.add(anotherNode); …and then I'd like to traver...
Hi, I created a video recorder which stores recording to a file. I would like to implement a method which would read the file each second, compare the current file with the old value (1 second older) and write the difference to a separate file. I would be very thankful if anyone could explain how to do that or write a simple example. I...
I am working on a code which I need to send sms messages from a sms service provider they get me delphy program that can send a sms from their service but i dont know delphy and i should change this code to java Can anyboddy guide me that how can i change this code? I think this is a soap service // *********************************...
How can I get Hibernate (using JPA) to create MySQL InnoDB tables (instead of MyISAM)? I have found solutions that will work when using Hibernate to generate an SQL file to create the tables, but nothing that works "on the fly". ...
Can Velocity be configure to fail (i.e. throw an Exception) when a $var is undefined. Such a "fail-fast" strategy would help in our testing cycles. ...
How do I get all the system devices in a list of Files or Strings. ...