I created a new class called RegesterAction but I didn’t keep this class in any package. How can I configure this class in the struts.xml? Below is the struts.xml file but I’m unable to understand the attribute values “default” and struts-default. Answer The package name is completely …
Tag: java
Two conditions in one if statement does the second matter if the first is false?
Okay, so I have this piece of code tested and I found there isn’t any exception thrown out. Does the statement here mean that if the first condition is false we don’t even have to check the second condition? Or it equals to ? And, what if it is written in C or python or some other languages? Thank…
Seeking in AES-CTR-encrypted input
As AES in CTR mode is great for random access, lets say I have a data source created with a CipherOutputStream in AES-CTR mode. The library underneath—which is not mine—uses a RandomAccessFile that allows to seek to a specific byte offset in the file. My initial thought would be to use a CipherInputStream wit…
Mockito mock objects returns null
I try to implement some tests for my JSF application and for the mocks I am using mockito. (I also use spring) The test succeeds, but when I want to retrieve the instance with the getInstance method. All Parameters which I have set before (via the constructor before) are null. I am new to mocked objects, so i…
Parser Exception for format EEEE, MMMM d, YYYY h:mm:ss a z
I’m getting parser exception on trying to parse string value: To format: This is the program sample: And this is the error message: this is my sample program Answer From the JodaTime docs: Zone names: Time zone names (‘z’) cannot be parsed. However SimpleDateFormat does support parsing of ti…
Reading a log file which gets rolled over
I am trying to use a simple program to read from a log file. The code used is as follows: The code works well for new lines being added to the log file but it does not replicate the rollover process. i.e. when the content of the log file is cleared I expect the java console to continue reading text
How perform task on JavaFX TextField at onfocus and outfocus?
I am working on JavaFX project. I need to perform some task on a JavaFX TextField. For example on the “on focus” event for the TextField I want to print and on the “out focus” event it should print Answer I thought it might be helpful to see an example which specifies the ChangeListene…
Compare two XML strings ignoring element order
Suppose I have two xml strings How to write a test that compares those two strings and ignores the element order? I want the test to be as short as possible, no place for 10-line XML parsing etc. I’m looking for a simple assertion or something similar. I have this (which doesn’t work) Answer My or…
Loading a native library in an Android JUnit test
I’ve generated a native library using ndk-build which I’m able to load and use with in my Android application. However, I want to write some tests against this part of my app. When calling the native function in my tests, I recieve this exception message: …where process is my native library …
Java regex capturing groups indexes
I have the following line, I need to fetch the word ABC, I wrote the following code snippet, So if I put group(0) I get ABC: but if I put group(1) it is ABC, so I want to know What does this 0 and 1 mean? It will be better if anyone can explain me with good examples. The regex