This time, I am showing you how to embed JVM inside macOS application bundle. In this 5 minutes long video I am guiding you step by step how to create application that will contain JVM. Please note that various JVM releases (depending on vendor) may have different requirements and limitations when it comes to embedding. […]
Whenever I see presentation, article, tutorial, related to JUnit 5 based tests there is Maven as well. I am not quite a fan of Maven. Anyway, I think it’s worth remembering that for running tests you don’t need it. You don’t have to create complex pom.xml file. You can resort to just few lines of […]
If you want to generate site-map of your WordPress based blog it’s simple and hard at the same time. It’s hard because it’s problematic to find good plugin that can get site-map for you. It’s simple, because you can do it without any plugin at all. You will need: search being enabled in your blog, […]
So, you are thinking which calendar should you pick for a coming year. In my case, I was always struggling whether I should pick Leuchtturm1917 or whether I should stick to Moleskine. I admit, this review is little bit biassed as I use Moleskine calendars for quite some time already. However, it has some objective […]
This time, I will sneak peek memory allocations that are leaking from within JNI based code.
There is a new video at my YouTube channel – JNI Cookbook. This time, I am focusing on XCode and JNI based development. I am setting up JNI based code (written in Objective-C) that spawns new JVM and calls custom class through it.
Sometimes you want to run JNI based code inside XCode – e.g. in case when your C/Objective-C/C++ code is based on some Java library. It’s both simple and little bit confusing to get JNI running in XCode – you have to make sure to set few things before proceeding. 1. Getting source code In this […]
I am making strong assumption that you have XCode and Command Line Tools installed. First of all, you need CMake. I prefer installation from the sources, so I go this way. > mkdir -p $HOME/opt/src > cd $HOME/opt/src > curl -o https://github.com/Kitware/CMake/releases/download/v3.16.2/cmake-3.16.2.tar.gz > tar zxf cmake-3.16.2.tar.gz > cd cmake-3.16.2 > ./bootstrap –prefix=$HOME/opt/usr/local > make > […]
Installation of Boost at macOS is quite simple. # get the sources > mkdir $HOME/opt/src > cd $HOME/opt/src > curl -o https://dl.bintray.com/boostorg/release/1.72.0/source/boost_1_72_0.tar.gz > tar zxf boost_1_72_0.tar.gz > cd boost_1_72_0 # configure boost > ./bootstrap.sh –prefix=$HOME/opt/usr/local/boost > ./b2 > ./b2 install # make sure to point to this location while compiling your code > export BOOST_LIB=$HOME/opt/usr/local/boost/lib […]
If you can see this error: “libjansi.jnilib” cannot be opened because the developer cannot be verified – while working on macOS 10.15 (screen shoot looks like this) it means you probably have issues with libjansi coming from Apache Maven. Make sure to upgrade to version apache-maven-3.6.2. ———— Update ———— In fact, you can do better […]
There is this interesting article about using NCurses Disk Usage in Arch Linux – you can find here: Cleaning root partition on Linux. I definitely prefer to stick to macOS, so I have decided to get it running from iTerm2. It’s really simple. All you have to do is to (as with other samples you […]
I had this strange issue with VirtualBox. There was this crash Process: VirtualBoxVM Path: /Applications/VirtualBox.app/Contents/Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM … … … Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x000007fc0a5286d0 Exception Note: EXC_CORPSE_NOTIFY Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler … … … Thread 0:: Dispatch queue: com.apple.main-thread 0 org.qt-project.QtGuiVBox […]
If you want to make sure that your macOS High Sierra is clean (when it comes to malicious software) you can use free tool (free as in beer and free as in speech – at the same time) called ClamAV. You can get it various ways. You can download it’s commercial version from AppStore – […]
It’s good to know, that _JAVA_OPTIONS will not always work in your Java code. Especially, when you elevate privileges using sudo. Let’s say we have this simple code public class Simple { public static void main(String [] arg) { System.out.println("Hello from Simple!"); } } and we run it following way > export _JAVA_OPTIONS="-Xms1G" > java […]
If you are trying to submit your solution using sbt, like this. > sbt submit user@some.address.com SoMeToKeN … … [error] Invalid input to `submit`. The required syntax for `submit` is: [error] submit <email-address> <submit-token> [error] [error] The submit token is NOT YOUR LOGIN PASSWORD. [error] It can be obtained from the assignment page: [error] https://www.coursera.org/learn/scala-spark-big-data/programming/CfQX2 […]
Just add this one inside ~/.ssh/config. Host * PubkeyAcceptedKeyTypes=+ssh-dss
The dusk was repeating them in a persistent whisper all around us, in a whisper that seemed to swell menacingly like the first whisper of a rising wind. ‘The horror! The horror!’
Jedyne co mogę powiedzieć na temat tej książki, to: a = g⋅sinα
Recently I have encountered quite frustrating issue with Kindle Paperwhite (3rd) and hard spaces inside Mobi document. At the same time (while buying the book) I have download three, different, formats: epub, Mobi and RTF. All of these have hard spaces all over the place in document. However, there is a slight difference in the […]
… is broken. There is no way to use default Image Capture application with Samsung SCX-4500W printer. However, there is hope :) You can download Samsung Easy Document Creator from here: link. Please note that Samsung line of printers was acquired by HP – this is why you have to download application from HP’s pages. […]