The Java Cryptography Architecture Standard Algorithm Name Documentation page for Java 6 lists ECDHE cipher suites. Thus I would expect they are supported in Java 6. Yet neither OOTB Java 6 nor the addition of the JCE Unlimited Strength policy files is enabling them. The book Bulletproof SSL and TLS also indi…
Tag: java
Multiplying Values of Two HashMaps
If I have two HashMaps, hm1 and hm2, how can I iterate through the two and multiply the two values together at each point in the two HashMaps and sum the total? They are both ordered identically, so I don’t need to worry about the keys, just the values. The data is in the form then I want to do
Add provided dependency to test classpath using Gradle
I’ve provided dependency scope configured like below. My problem is, the provided dependencies are not visible during runtime in tests. How can I configure this to keep the dependencies provided but available on the test classpath? One solution is to add the dependency like the joda-time library with te…
Is there a default type for numbers in Java
If I write something like this Which type has the ’18’? Is it int or byte? Or doesn’t it have a type yet? It can’t be int, because something like this is correct: And this is incorrect: EDIT: I think I found the right part in the spec at Assignment Conversion : The compile-time narrowi…
null pointer Exception after writeObject to OutputStream
This is code for a basic chat server. The user is asked to enter a username and password on the Chat_Client, which is then encrypted using EncryptedMessage’s encrypt method and sent to the Chat_Server via the ClientOutputStream using writeObject. When code line clientOutputStream.writeObject(uname) is r…
Is org.junit.Assert.assertThat better than org.hamcrest.MatcherAssert.assertThat?
I’m new to JUnit and Hamcrest and would like best-practice advice so I can decided which documentation to study first. For starters, which of these assertThat methods is better? org.junit.Assert.assertThat (from junit-4.11.jar) org.hamcrest.MatcherAssert.assertThat (from hamcrest-core-1.3.jar) According…
How does the validate() method in Struts 2 get the result “input”?
In Struts 2, “input” is returned when a check fails in the validate() method. I then map <result name=”input”> in struts.xml for the appropriate page. I am just wondering how it gets the “input”, which is a String when the validate() method itself returns void? I woul…
Apache Camel mock endpoint
I recently started to investigate Apache Camel and I have one issue. I start writing some test for my routes, and there are a lot of examples, where “to” part of route is written as So, I wrote a test, where I am exepcting to have mock:result as last endproint. Here is the questions: Is this impor…
Why does java app crash in gdb but runs normally in real life?
Attempting to run java app from gdb results in segfault, yet running app alone does not. This app is a .JAR which uses JOGL and a bit of memory-mapping to talk to the GPU. Stacktrace below hints at …
RealmObject AND Parcelable
I’m new to Realm for Android so I’m not sure I’m approaching this the right way. I have a class which looks like this: The problem is the Parcelable interface contains methods like describeContents() writeToParcel() and RealmObjects aren’t supposed to have methods other than getters an…